حَدَّثَنِي مَالِكٌ، عَنْ صَفْوَانَ بْنَ سُلَيْمٍ، عَنْ عَطَاءِ بْنِ يَسَارٍ، أَنَّ رَسُولَ اللَّهِ صلى الله عليه وسلم سَأَلَهُ رَجُلٌ فَقَالَ يَا رَسُولَ اللَّهِ أَسْتَأْذِنُ عَلَى أُمِّي فَقَالَ ‏"‏ نَعَمْ ‏"‏ ‏.‏ قَالَ الرَّجُلُ إِنِّي مَعَهَا فِي الْبَيْتِ ‏.‏ فَقَالَ رَسُولُ اللَّهِ صلى الله عليه وسلم ‏"‏ اسْتَأْذِنْ عَلَيْهَا ‏"‏ ‏.‏ فَقَالَ الرَّجُلُ إِنِّي خَادِمُهَا ‏.‏ فَقَالَ لَهُ رَسُولُ اللَّهِ صلى الله عليه وسلم ‏"‏ اسْتَأْذِنْ عَلَيْهَا أَتُحِبُّ أَنْ تَرَاهَا عُرْيَانَةً ‏"‏ ‏.‏ قَالَ لاَ ‏.‏ قَالَ ‏"‏ فَاسْتَأْذِنْ عَلَيْهَا ‏"‏ ‏.‏

Malik related to me from Safwan ibn Sulaym from Ata ibn Yasarthat the Messenger of Allah, may Allah bless him and grant him peace,was questioned by a man who said, "Messenger of Allah, shall I askpermission of my mother to enter?" He said, "Yes " The man said, "Ilive with her in the house". The Messenger of Allah, may Allah blesshim and grant him peace, said "Ask her permission." The man said, "Iam her servant." The Messenger of Allah. may Allah bless him and granthim peace, said, "Ask her permission. Do you want to see her naked?"He said, "No." He said, "Then ask her permission." Translation Not Available

Book Ref: Muwatta Imam Malik Book 54 Hadith 1766
Web Ref:  Muwatta Imam Malik Book 54 Hadith 1