Narrated Sahl bin Sa`d:
The Prophet's companions did not take as a starting date for the Muslim calendar, the day, the Prophet (ﷺ) had been sent as an Apostle or the day of his death, but the day of his arrival at Medina.
Reference | : Sahih al-Bukhari 3934 |
In-book reference | : Book 63, Hadith 159 |
USC-MSA web (English) reference | : Vol. 5, Book 58, Hadith 271 |
(deprecated numbering scheme) |