Yahya related to me from Malik from Damra ibn Said al-Mazini fromal-Hajjaj ibn Amr ibn Ghaziya that he was sitting with Zayd ibn Thabitwhen Ibn Fahd came to him. He was from the Yemen. He said, "Abu Said!I have slave-girls. None of the wives in my keep are more pleasing tome than them, and not all of them please me so much that I want achild by them, shall I then practise coitus interruptus?" Zayd ibnThabit said, "Give an opinion, Hajjaj!" "I said, 'May Allah forgiveyou! We sit with you in order to learn from you!' He said, 'Give anopinion! 'I said, 'She is your field, if you wish, water it, and ifyou wish, leave it thirsty. I heard that from Zayd.' Zayd said, 'Hehas spoken the truth.' "
USC-MSA web (English) reference: Book 29, Hadith 99
Arabic reference: Book 29, Hadith 1264