The Book on General Behaviour (Kitab Al-Adab)
Muslim :: Book 25 : Hadith 5340
Anas b. Malik reported: I took 'Abdullah b. Abi Talha Ansari to Allah's Messenger (may peace be upon him) at the time of his birth. Allah's Messenger (may peace be upon him) was at that time wearing a woollen cloak and besmearing the camels with tar. He said: Have you got with you the dates? I said: Yes. He took hold of the dates and put them in his mouth and softened them, then opened the mouth of the infant and put that in it and the child began to lick it. Thereupon Allah's Messenger (may peace be upon him) said: The Ansar have a liking for the dates, and he (the Holy Prophet) gave him the name of 'Abdullah.