Yahya related to me from Malik from Abu'n-Nadr, the mawla of Umaribn Ubaydullah from Amir ibn Sad ibn Abi Waqqas from his father thathe used to practise coitus interruptus. (AR)
USC-MSA web (English) reference: Book 29, Hadith 96 (AR)
Arabic reference (AR): Book 29, Hadith 1261 (AR)