Sahih Muslim Book 025, Hadith Number 5350.

Chapter : The Excellence of Tahnik of the new-born child at the time of its birth and of carrying it to a pious person so that he may soften some dates and rub its palate with them, and permissibility of giving name on the day of its birth and the excellence of such names as 'Abdullah, Ibrahim and the names of all the apostles of Allah (may peace be upon him).

Anas b. Malik reported that Allah's Messenger (may peace be upon him) had the sublimet character among mankind. I had a brother who was called Abd 'Umair. I think he was weaned. When Allah's Messenger (may peace he upon him) came to our house he saw him, and said: Abu 'Umair, what has the sparrow done? He (Anas) said that he had been playing with that.