Hadith 1065:2
Bahz narrated to us, Ibrahim ibn Sa'd narrated to me, Ibn Shihab narrated to us, from Mahmud ibn Rabi', and he had remembered a mouthful of water which the Messenger of Allah (peace and blessings of Allah be upon him) had spat onto his face from a bucket from a well of theirs.
حدثنا بهز، حدثني إبراهيم بن سعد، حدثنا ابن شهاب، عن محمود بن ربيع، وقد كان " عقل مجة مجها رسول الله صلى الله عليه وسلم في وجهه من دلو من بئر لهم "