Sahih Muslim
The Book Pertaining to the Merits of the Companions (Allah Be Pleased With Them) of the Holy Prophet (May Peace Be Upon Him) (Kitab Al-Fadail Al-Sahabah)
Book Number: 031 / Hadith Number: 6075
Hisham reported on the authority of his father that Hassan b. Thabit talked much about 'A'isha. I scolded him, whereupon she said: My nephew, leave him for he defended Allah's Messenger (may peace be upon him).