Hazrat Bara bin Azib (may Allah be pleased with him) said that this verse was revealed about us, the Ansar. When we used to come for Hajj, after entering the state of Ihram, we would not enter our houses through the doors, but would climb over the walls to enter the house. After embracing Islam, an Ansari man came and entered his house through the door. People cursed and reproached him for this, so this revelation was sent down: "It is not righteousness that you enter houses from the back (by climbing over the walls), but righteousness is for the one who fears Allah. So enter houses through their doors."