ßÊÇÈ : Hadeeth No:3670 : Sahl bin Sad: The Prophet's companions did not take as a starting date for the Muslim calendar, the day, the Prophet had been sent as an Apostle or the day of his death, but the day of his arrival at Medina....

ßÊÇÈ ÇáÇÓÊÆÐÇä : Hadeeth No:5846 : Abu Said Al-Khudri: While I was present in one of the gatherings of the Ansar, Abu Musa came as if he was scared, and said, "I asked permission to enter upon 'Umar three times, but I was not given the permission, so I returned." (When 'Umar came to know about it) he said to Abu Musa, "Why did you ...