Muwatta Malik #1316
Divorce
The Arabic includes the chain of narration (sanad) and the collector's commentary; the English translation shows the Prophet's words only.
وَحَدَّثَنِي عَنْ مَالِكٍ، عَنْ أَبِي النَّضْرِ، مَوْلَى عُمَرَ بْنِ عُبَيْدِ اللَّهِ عَنِ ابْنِ أَفْلَحَ، مَوْلَى أَبِي أَيُّوبَ الأَنْصَارِيِّ عَنْ أُمِّ وَلَدٍ، لأَبِي أَيُّوبَ الأَنْصَارِيِّ أَنَّهُ كَانَ يَعْزِلُ .
Yahya related to me from Malik from Abu'n-Nadr, the mawla of Umar
ibn Ubaydullah from Ibn Aflah, the mawla of Abu Ayyub al-Ansari from
an umm walad of Abu Ayyubal-Ansari that he practised coitus
interruptus.
About Muwatta Malik
This hadith is #1316 from Muwatta Malik, in the Book of Divorce.