Abu Dawud Book 20, Hadith Number 3705.
Narated By N/A : ”Aisha said that the Prophet (may peace be upon him) used to stay with Zainab, daughter of Jahsh, and drink honey. I and Hafsah counselled each other that if the Prophet (may peace be upon him) enters upon any of us, she must say: [find the smell of gum (maghafir) from you. He then entered upon one of them; she said that to him. Thereupon he said: No, I drank honey at (the house of) Zainab daughter of Jahsh, and I will not do it again. Then the following verse came down: “O Prophet! why holdest thou to be forbidden that which Allah has made lawful to thee ? “Thou seekest… If you two turn in repentance to Allah” refers to Hafsah and ”Aisha, and the verse: “When the Prophet disclosed a matter in confidence to one of his consorts” refers to the statement of the Prophet (may peace be upon him): No, I drank honey.