...It is not A1-Birr (piety, righteousness) that you enter the houses from the back, but A1-Birr (is the quality of the one) who fears Allah. (V.2:189)

Hadith Number 4512


Narrated Al-Bara

In the Pre-lslamic Period when the people assumed Ihram, they would enter their houses from the back. So Allah revealed:-- "And it is not righteousness that you enter houses from the back, but the righteous man is he who fears Allah, obeys His Orders and keeps away from what He has forbidden. So enter houses through their doors." (2.189)