وَحَدَّثَنِي عَنْ مَالِكٍ، عَنْ نَافِعٍ، أَنَّ عَبْدَ اللَّهِ بْنَ عُمَرَ، طَلَّقَ امْرَأَةً لَهُ فِي مَسْكَنِ حَفْصَةَ زَوْجِ النَّبِيِّ صلى الله عليه وسلم وَكَانَ طَرِيقَهُ إِلَى الْمَسْجِدِ فَكَانَ يَسْلُكُ الطَّرِيقَ الأُخْرَى مِنْ أَدْبَارِ الْبُيُوتِ كَرَاهِيَةَ أَنْ يَسْتَأْذِنَ عَلَيْهَا حَتَّى رَاجَعَهَا ‏.‏

Yahya related to me from Malik from Nafi that Abdullah ibn Umardivorced one of his wives in the house of Hafsa, the wife of theProphet, may Allah bless him and grant him peace, while he was on theway to the mosque. He went another route from behind the houses beingaverse to ask permission to enter until he returned to her. Translation Not Available

Book Ref: Muwatta Imam Malik Book 29 Hadith 1226
Web Ref:  Muwatta Imam Malik Book 29 Hadith 65