Bara' reported: When the Ansar performed the Pilgrimage, they did not enter their houses but from behind. A person from the Ansar came and he began to enter from his door but it was said to him (why he was doing something in contravention to the common practice of coming to the houses from behind). Then this verse was revealed. "Piety is not that you come to the doors from behind" (ii. 189).
Explanation & Benefits
Shaykh Maulana Abdul Aziz Alvi
Hadith Commentary: Benefits and Issues: Except for the Hums (the Quraysh, Khuza‘ah, and others), the Arab people and the Ansar, when they set out from home for Hajj or ‘Umrah and then, for some reason, needed to return home, did not consider it correct to enter the house through the door. Similarly, after completing Hajj or ‘Umrah, instead of entering through the doors, they would enter their houses from the back or by some other route. Perhaps the motivation behind this strange and peculiar practice was the misconception that since they had left through those doors burdened with sins, it was not proper, after having become purified, to enter their homes through the same doors.
Source: Tuhfat al-Muslim: Commentary on Sahih Muslim, Page: 7549