The Quran establishes the fundamental parameters of the Iddah, detailing distinct periods for different circumstances. For divorced women, the divine injunction is clear: divorced women remain in waiting for three periods. Tafsir al-Jalalayn clarifies that these "periods" (qurū’) refer either to three cycles of purity or three menstruations, a point of scholarly deliberation that influences the practical application of the ruling. Ibn Kathir notes that this ruling applies to women whose marriages were consummated and who still experience menstruation, emphasizing the period's primary role in establishing paternity and avoiding confusion of lineage.

In the case of widowhood, the Quran prescribes a different duration: 2:234 wait four months and ten days]. This specific period, universally agreed upon by scholars as encompassing cases whether the marriage was consummated or not, as noted by Ibn Kathir, serves as a time for mourning and reflection. It also inherently addresses the biological possibility of pregnancy, with the four months and ten days being a sufficient duration to ascertain whether the deceased husband fathered a child. Sa`id bin Musayyib and Abu Al-`Aliyah, as mentioned by Ibn Kathir, explicitly link this duration to verifying pregnancy, aligning with the understanding that a human embryo's creation is established within approximately four months.

Further elaborations in the Quran address specific scenarios. For instance, 33:49. This verse exempts women from Iddah if divorce occurs before sexual consummation, as there is no possibility of paternity to establish. However, Ibn Kathir highlights a critical exception to this, stating that if a woman's husband dies, she must still observe the Iddah of four months and ten days, even if the marriage was unconsummated, a consensus among scholars.

For women who no longer menstruate due to age or those who have not yet begun, the Quran specifies their period is three months, and [also for those who have not menstruated]. Pregnant women, regardless of whether their separation is due to divorce or widowhood, have their Iddah defined their term is until they give birth. Ma'arif-ul-Quran clarifies that this period extends until childbirth, irrespective of its length. These divine stipulations demonstrate the Quran's meticulous consideration of various biological and social circumstances.

The Sunnah of the Prophet Muhammad (peace be upon him) provides crucial practical interpretations and further mandates for the observance of Iddah. The hadith regarding `Abdullah bin `Umar divorcing his wife during her menstruation, cited in Sahih Bukhari and Muslim, is foundational. The Prophet (peace be upon him) became angry and instructed `Abdullah “to take her back and keep her until she is clean from her menses, and then to wait until she gets her next period and becomes clean again. Then, if he wishes to divorce her, he can divorce her when she is clean from her menses, before he has sexual intercourse with her. This is the `Iddah which Allah the Exalted and Most Honored has fixed”. This tradition underscores the prohibition of divorcing a woman during her menstrual period or during a period of purity following intercourse, as it could unduly prolong the Iddah and introduce uncertainty regarding pregnancy. Ma'arif-ul-Quran explains that this ensures the Iddah commences properly and does not cause undue hardship to the woman.

Beyond the timing of divorce, the Prophet's Sunnah also dictates certain conduct during the Iddah, particularly in cases of widowhood. Umm Habibah and Zaynab bint Jahsh narrated that the Prophet (peace be upon him) stated “it is not lawful for a woman who believes in Allah and the Last Day to mourn for more than three days for any dead person except her husband, for whom she mourns for four months and ten days”. This ruling establishes the obligation of hidad (mourning) for widows, which includes abstaining from adornment and perfume. The historical context provided by Umm Salamah highlights the contrast with pre-Islamic practices of year-long mourning, showing Islam's moderated approach.

The Messenger of Allah also addressed the issue of remarriage proposals during Iddah. While direct proposals are forbidden, “there is no sin on you if you make a hint of betrothal” to a widow, meaning indirect suggestions of marriage are permissible. Ibn `Abbas clarified this as expressing a general desire for marriage or seeking a suitable wife, but not making a secret promise of marriage, as detailed by Ibn Kathir. This nuanced approach balances the woman's right to eventually remarry with the sanctity of the Iddah period.

Islamic jurisprudence (fiqh) elaborates on the Quranic and Sunnah foundations of Iddah, with various schools of thought offering detailed rulings.

Duration and Calculation of *Iddah*: - For divorced women, the waiting period is typically three menstrual cycles. Tafsir al-Jalalayn notes the two interpretations of qurū’ (purity or menstruation), leading to slightly different calculations depending on the school. Hanafi fiqh holds that if a menopausal woman who observed Iddah by months then sees blood, her prior Iddah is invalidated, and she must restart by menstrual cycles, highlighting the primacy of physiological cycles when present Hidaya: vol 02 p027. For slave women, the Hanafi school specifies two menstrual cycles Hidaya: vol 02 p027. If she does not menstruate, her Iddah is one and a half months Hidaya: vol 02 p027. - For widows, the Iddah is four months and ten days Hidaya: vol 02 p027. For a slave woman, this period is half that of a free woman, at two months and five days Hidaya: vol 02 p027, according to Hanafi law. - For pregnant women, whether divorced or widowed, the Iddah concludes upon childbirth until they give birth. The Hanafi school adds that if a woman gives birth while her husband is on his deathbed, her Iddah expires, making remarriage permissible Hidaya: vol 02 p027. - A crucial principle across schools is that Iddah begins from the moment of divorce or death, not from the woman's knowledge of it Hidaya: vol 02 p029. - The Hanafi school also addresses complex scenarios like overlapping Iddahs. If a woman observing Iddah due to death is cohabited with due to shubhah (misconception, i.e., an irregular intercourse that creates a resemblance to legal intercourse), she must observe another Iddah, and the two Iddahs overlap Hidaya: vol 02 p029.

Conduct during *Iddah* (Hidad): *Hidad (mourning), primarily for widows and irrevocably divorced women, is a key aspect. The Hanafi school defines hidad as abstaining from perfume, adornment, kohl, and scented or unscented oils, unless there is a valid excuse (Hidaya: vol 02 p030). The Prophet (peace be upon him) explicitly forbade using kohl or oil during Iddah (Hidaya: vol 02 p031). Maliki jurisprudence adds further detail, prohibiting jewelry, all dyes except black, all perfumes, henna, perfumed oils, and specific hair combing practices (Risala: vol 01 p098). The Hanbali school similarly mandates abandoning perfume and adornment (Mughni: vol 03 p303). These rules, however, are not universally applied; Hanafi fiqh states that hidad is not required for a minor girl, a non-Muslim woman, or during the Iddah of an Umm al-Walad* (a slave woman who bore her master a child) or an invalid marriage Hidaya: vol 02 p031.

Husband's Rights and Obligations during *Iddah*: During a revocable divorce, the husband has more right to take them back if they want reconciliation. This "better right" (ahaqq) is not merely a priority over others but an exclusive right, as explained by Tafsir al-Jalalayn. The Quran warns against retaining them intending harm, to transgress [against them], emphasizing that reconciliation must be genuine. Ibn Kathir clarifies that this specifically refers to a man divorcing and repeatedly taking his wife back to prolong her Iddah and prevent her from remarrying.

For revocably divorced women, the husband is obligated to provide housing and maintenance. The Quran states do not turn them out of their [husbands' houses, nor should they themselves leave during that period]. This establishes the wife's right to reside in her husband's home during Iddah. The Hanafi school views this not as a favor but as an obligatory right that continues until the Iddah is completed (Ma'arif-ul-Quran). An exception allows expulsion only if the woman commits "a clear immorality" (فَاحِشَةٍ مُّبَيِّنَةٍ), which scholars interpret variously as adultery, abusive language, or even simply leaving the house without permission, as detailed in Ma'arif-ul-Quran and Ibn Kathir. However, for irrevocably divorced women, many scholars, including those cited by Ibn Kathir, hold that housing and provisions are not obligatory, based on the hadith of Fatimah bint Qays.

Prohibition of Marriage Contracts During *Iddah*: A fundamental legal aspect of Iddah is the prohibition of formal marriage contracts during this period. The Quran explicitly commands 2:235. This prohibition is absolute, and scholars agree that any marriage contract entered into during the Iddah is invalid, as reiterated by Ibn Kathir. This safeguards lineage and upholds the sanctity of the Iddah's purpose.

The institution of Al-Iddah transcends mere legal stipulations; it is imbued with deep spiritual and social wisdom.

Protection of Lineage: The primary, widely acknowledged purpose of *Iddah is to ensure the clarity of paternity. By observing a waiting period, particularly three menstrual cycles for divorced women, it can be ascertained whether the woman is pregnant from her former husband. If she is, [it is not lawful for them to conceal what Allah has created in their wombs](2:228), a command that relies on a woman's honesty and faith. This prevents confusion of lineage (ikhtilat al-ansab*), which is paramount in Islamic family law for inheritance, guardianship, and other rights.

Opportunity for Reconciliation: For revocable divorces, *Iddah* serves as a crucial window for reconciliation. The Quran states that husbands have more right to take them back in this [period if they want reconciliation]. The command to keep divorced women in their marital homes, do not turn them out of their [husbands' houses], further facilitates this, as proximity might foster a change of heart. As Ibn Kathir explains, "Allah decides that the husband feels in his heart for the marriage to continue." This divine wisdom highlights Islam's preference for maintaining marital bonds and providing space for repentance and renewed affection, emphasizing that divorce should be a last resort.

Respect for Women and Dignified Transition: Islam's provisions for *Iddah afford women a period of dignified transition. During this time, they are to be treated [according to what is reasonable](2:228), implying kindness and justice. After the Iddah* concludes, women are free to remarry, and their guardians are explicitly warned do not prevent them from remarrying their [former husbands if they agree among themselves on an acceptable basis]. Ma'arif-ul-Quran links this to a specific incident where a companion prevented his sister from remarrying her former husband, leading to the revelation of this verse, emphasizing the woman's right to choose. This prohibition against undue interference, whether from former husbands or guardians, upholds women's autonomy and rights in remarriage.

Divine Wisdom and Trust: The recurring phrase, Allah is Exalted in Might and Wise, or similar declarations of divine knowledge and wisdom, serves as a powerful reminder throughout the *Iddah verses. It signals that these laws are not arbitrary but stem from Allah's perfect knowledge of human nature and societal needs. Humans are reminded, [Allah knows and you know not](2:232), urging submission to divine commands even if the full wisdom is not immediately apparent. This fosters a sense of God-consciousness (taqwa*) in observing these intricate family laws, knowing that Allah is 2:235.

In essence, Al-Iddah is a multi-faceted concept in Islamic jurisprudence, designed to manage the delicate post-marital transition with justice, wisdom, and compassion. It protects fundamental rights, ensures social order, and provides spiritual solace during times of significant life change, reflecting the holistic nature of Islamic law.