Musannaf Ibn Abi Shayba 33:99

Abdullah ibn Idris narrated to us, from Muhammad ibn Umar, from Abdullah ibn Abd al-Rahman ibn Ma'mar, from a man from Banu Salim or Fahm, that the Prophet, peace and blessings of Allah be upon him, was brought a gift. He looked and did not find anything to place it in, so he said, "Place it on the ground, for I am only a servant; I eat as a servant eats, and I drink as a servant drinks." And if the world weighed as much as the wing of a mosquito in the sight of Allah, He would not have given a disbeliever a drink of water from it.