Ubaid bin Umair reported that Abu Musa brought permission from Umar (to enter the house) three times, and finding him busy came back, whereupon Umar said (to the inmates of his house): Did you not hear the voice of Abdullah bin Qais (RA) (the Kunya of Abu Musa Ashari)? He was called back and he (Hadrat Umar) said: What did prompt you to do it? Thereupon, he said: This is how we have been commanded to act. He (Hadrat Umar) said: Bring evidence (in support of it), otherwise I shall deal (strictly) with you. So he (Abu Musa) set out and came to the meeting of the Ansar and asked them to bear witness before hadrat Umar about this. They (the Companions present there) said: None but the youngest amongst us would bear out this fact. So Abu Said Khudri (who was the youngest one in that company) said: We have been commanded to do so (while visiting the house of other people). Thereupon Umar said: This command of Allahs Messenger ﷺ had remained hidden from me up till now due to (my) business in the market.