The significance of Umra is deeply rooted in the Sunnah (practice) of the Prophet Muhammad (ﷺ) and finds indirect affirmation in the Quran. The Hadith emphasize Umra as a virtuous act, with Abu Huraira narrating that the performance of Umra is an expiation for the sins committed between it and the previous one. This powerful spiritual benefit highlights its importance as a means of purification and seeking divine forgiveness.

The Quran, while explicitly commanding Hajj, implicitly supports Umra through verses like perform the Hajj and Umra for Allah. This verse serves as a foundational command for both pilgrimages. Aisha (رضي الله عنها) in a Hadith about Hajj-at-Tamattu` also references this verse, indicating that the command to complete both Hajj and Umra for Allah applies to those who are able (Bukhari 25:45, 25:58). The historical context further reveals that the companions considered performing Umra as a significant act, often alongside Hajj, as seen in various narrations describing the Prophet's pilgrimages.

The core rituals of Umra—Ihram, Tawaf, and Sa'i—are meticulously detailed in the Hadith, demonstrating how the Prophet (ﷺ) himself performed them. The journey begins with assuming Ihram, a state of ritual purity marked by specific attire and prohibitions. The Prophet (ﷺ) fixed various Mawaqit (plural of Miqat), designated points from which pilgrims must assume Ihram depending on their origin. For instance, Allah's Messenger (ﷺ) made Dhul-Hulaifa as the Miqat for the people of Medina, Qarn-al-Manazil for Najd, Al-Juhfa for Sham, and Yalamlam for Yemen (Bukhari 25:14, 25:17). These geographical markers ensure that all pilgrims enter the sacred state of Ihram before approaching Mecca.

Once in Mecca, pilgrims perform the Tawaf, circumambulating the Ka'ba seven times. The Prophet (ﷺ) used to perform Ramal (fast walking with moving of the shoulders) during the first three rounds and walk during the last four, a practice emulated by Abdullah bin `Umar Bukhari 25:90. After Tawaf, two rak'at prayers are offered behind Maqam Ibrahim Bukhari 25:170. The next vital ritual is the Sa'i, walking seven times between the hills of Safa and Marwa. `Amr bin Dinar's repeated questions to Ibn `Umar and Jabir bin `Abdullah about whether a man can have sexual relations with his wife after Tawaf but before Sa'i clearly illustrate the sequential importance of these rites, with both companions asserting that [he should not go near his wife till he has finished the Tawaf of Safa and Marwa](0:0, 25:108, 25:127). `Aisha (رضي الله عنها) also explicitly states that surely, Allah's Apostle set the tradition of Tawaf between Safa and Marwa, so nobody is allowed to omit the Tawaf between them, clarifying the obligation of Sa'i, which some early Muslims, due to pre-Islamic practices, initially considered optional or even disliked Bukhari 25:129.

The Umra concludes with the shaving or clipping of hair, symbolizing the end of the state of Ihram. This is seen in the context of the Hudaibiya treaty where the Prophet (ﷺ) slaughtered his sacrifice and got his head shaved at Al-Hudaibiya when prevented from entering Mecca.

The Hadith reveal various instances of the Prophet (ﷺ) performing Umra, often intertwined with significant historical events. One notable example is the `Umra of Hudaibiya, when the Prophet (ﷺ) and his companions were prevented by the Quraish from entering Mecca. Despite this, the Prophet (ﷺ) [assumed the state of Ihram for `Umra from Dhul-Hulaifa](0:0, 25:173, 64:220) and garlanded his sacrificial animals, demonstrating his intention. When blocked, he shaved his head and had sexual relations with his wives and slaughtered his Hadi and performed Umra in the following year, highlighting the legal flexibility and alternative actions when facing prevention. This event led to the famous Treaty of Hudaibiya (Bukhari 53:9, 58:26).

There were also discussions among the companions regarding the number and timing of the Prophet's Umras. While Ibn `Umar suggested four, with one in Rajab, `Aisha (رضي الله عنها) vehemently corrected him, stating that [the Prophet (ﷺ) did not perform any `Umra but he (i.e. Ibn `Umar) witnessed it. And he (the Prophet (ﷺ)) never did any `Umra in (the month of) Rajab](0:0, 26:3, 26:4, 64:288). Anas bin Malik's account provides a detailed list of four Umras: the `Umra of Hudaibiya, another in the following year after the peace treaty, one from Al-Ji'rana after the battle of Hunain, and finally [another `Umra in combination with his Hajj](26:6, 26:7, 64:192). These narrations clarify that the Umra, when performed during the months of Hajj (Shawwal, Dhul-Qa'da, Dhul-Hijja), can be combined with Hajj in different ways (Tamattu`, Qiran).

The Hadith also address the permissibility of performing `Umra during the months of Hajj. Ibn `Abbas explicitly corrected the pre-Islamic notion that [to perform `Umra during the months of Hajj was one of the major sins](25:50, 63:57), affirming its legitimacy and even encouraging it.

The spiritual rewards of performing Umra are highly emphasized. As mentioned earlier, the performance of Umra is an expiation for the sins committed. This makes Umra a powerful means for spiritual renewal and seeking forgiveness, distinct from the reward of Hajj Mabrur which is paradise itself. The concept of "Hajj-Mabrur" (an accepted Hajj) and "accepted Umra" is mentioned in a dream vision relayed to Ibn `Abbas Bukhari 25:53, indicating the desire for a pilgrimage that is performed correctly and accepted by Allah.

Furthermore, a special virtue is attached to performing Umra during Ramadan. The Prophet (ﷺ) told an Ansari woman that [perform `Umra when Ramadan comes, for `Umra in Ramadan is equal to Hajj (in reward)](26:9, 28:43). This does not mean it fulfills the obligation of Hajj, but rather bestows a reward equivalent to Hajj in its spiritual merit, providing an immense incentive for believers to undertake it during the blessed month.

The Hadith provide crucial insights into the legal intricacies of Umra, particularly concerning its combination with Hajj. The Prophet (ﷺ) allowed for different types of pilgrimage: Hajj-al-Ifrad (Hajj only), Hajj-at-Tamattu` (Umra followed by Hajj with separate Ihrams and a break in between), and Hajj-al-Qiran (Hajj and Umra with one continuous Ihram).

During the Farewell Hajj, the Prophet (ﷺ) initially instructed many companions, who had not brought sacrificial animals (Hadi), to convert their Hajj intention into an `Umra and then perform another Ihram for Hajj (Tamattu`). Ibn `Abbas narrates that the Prophet [ordered us to change our intentions of the Ihram for `Umra and that we could finish our Ihram after performing the `Umra and could go to our wives](0:0, 47:21, 25:50, 63:57). This was significant as it meant they could break their Ihram after Umra and then resume it for Hajj. However, the Prophet (ﷺ) himself, along with companions like `Ali, who had brought the Hadi, performed Hajj-al-Qiran, meaning they [could not finish his Ihram till he slaughtered (my Hadi)](25:203, 25:52, 25:54).

The case of `Aisha (رضي الله عنها) highlights another important legal ruling. When she experienced menstruation before completing her Umra, the Prophet (ﷺ) advised her to [abandon your `Umra, undo and comb your hair, and assume Ihram for Hajj;](25:42, 26:10, 26:13). After completing Hajj, she was sent to Tan'im with her brother `Abdur-Rahman to perform a separate Umra to compensate for the missed one (Bukhari 25:6, 25:46, 56:193, 56:194). This demonstrates the flexibility and compassion within Islamic law for pilgrims facing unforeseen circumstances.

The Hadith also address minor details, such as the clothes suitable for a Muhrim (person in Ihram): he should not wear a shirt, a turban, trousers, a head cloak or garment scented with saffron or Wars. For those who cannot find slippers, they may use socks cut to expose the ankles. These specific guidelines ensure the integrity of the Ihram state.

The Umra, as illuminated by these Hadith, is far more than a set of rituals; it is a journey laden with historical significance, profound spiritual benefits, and precise legal guidelines derived from the exemplary life of the Prophet Muhammad (ﷺ). From the meticulous details of Ihram and the sequence of Tawaf and Sa'i to the various types of combining Umra with Hajj, the Sunnah provides comprehensive guidance. Its ability to expiate sins and the special merit of performing it in Ramadan underscore its enduring importance for Muslims seeking proximity to Allah and spiritual purification.