Sayyiduna Abdullah bin Abi Habibah (may Allah be pleased with him) was asked: "What did you witness of the Messenger of Allah (peace and blessings be upon him)?" He said: The Messenger of Allah (peace and blessings be upon him) came to us in our mosque at Quba'. I was a young boy at the time; I came and sat on his right, and Sayyiduna Abu Bakr (may Allah be pleased with him) sat on his left. Then he (peace and blessings be upon him) called for something to drink; he drank and handed it to me (as I was) on his right.
Hadith Referenceالمعجم الكبير للطبراني / باب العين / 14046