Sahih Bukhari | Volume 7 | Hadith Number 614

Narrated by Abu Said
A man came to the prophet and said, 'My brother has got loose motions. The Prophet said, Let him drink honey." The man again (came) and said, 'I made him drink (honey) but that made him worse.' The Prophet said, 'Allah has said the Truth, and the abdomen of your brother has told a lie." (See Hadith No. 88)