وَحَدَّثَنِي عَنْ مَالِكٍ، عَنْ نَافِعٍ، عَنْ عَبْدِ اللَّهِ بْنِ عُمَرَ، أَنَّهُ كَانَ لاَ يَعْزِلُ وَكَانَ يَكْرَهُ الْعَزْلَ ‏.‏

Yahya related to me from Malik from Nafi that Abdullah ibn Umardid not practise coitus interruptus and thought that it wasdisapproved. Translation Not Available

Book Ref: Muwatta Imam Malik Book 29 Hadith 1263
Web Ref:  Muwatta Imam Malik Book 29 Hadith 98