Tabarani said: Hussain bin Is’haq al-Tustari informed us, who was informed by Uthman bin Abi Shaybah, who was informed by Shababah bin Sawwar, who was informed by Abu Malik al-Nakha’i who narrated from Aswad bin Qays, who narrated from Nubayh al-Anazi, who narrated from Umm Ayman, who said: ‘‘One night the Prophet got up and went to a side to urinate in the bowl. During the night, I rose and was thirsty so I drank whatever was in it and I did not even realize what it was. In the morning, He said, ‘Oh Umm Ayman! Throw away whatever is in the bowl’. I replied, ‘I drank what was in the bowl’. He thereafter smiled as such that His teeth appeared and said, ‘Beware! You will never have stomach pain’’.

(Tabarani Kabir 20740, Mustadrak al-Hakim 6912, Dalail al-Nubuwwah li-Isfahani 355)