The Book of Drinks (Kitab Al-Ashriba)
Muslim :: Book 23 : Hadith 4984
Al-Bara' reported: When Allah's Messenger (may peace be upon him) went forth from Mecca to Medina, Suraqa b. Malik b. Ju'shum pursued him. Allah's Messenger (may peace be upon him) invoked curse upon him, and his horse sank (in the desert). He (Suraqa) said: (Allah's Messenger), invoke blessings for me and I will do no harm to you. He (the Holy Prophet) then supplicated Allah. (At that time) he (the Holy Prophet) felt thirsty, and they happened to pass by a shepherd. Abu Bakr Siddiq said: I took hold of a bowl and milked some milk into it for Allah's Messenger (may peace be upon him) and gave it to him. He drank it and I was pleased.