It is narrated from Hazrat Mahmood bin Rabee' (may Allah be pleased with him) that he remembers the mouthful which the Holy Prophet (peace and blessings be upon him) had sprayed upon him, and the water was taken from the bucket which was drawn from their well.
Hadith Referenceمسند احمد / مسند الأنصار رضي الله عنهم / 23638
Hadith Gradingحکم دارالسلام:إسناده صحيح، وجعله من حديث الزهري عن محمود بن لبيد وهم، وقد تفرد به عبدالرزاق، والصواب أنه من حديث الزهري عن محمود بن الربيع