Al-Adab Al-Mufrad, Book 43, Hadith 1060 (English) ⓘ
Muslim ibn Nadhir said, "A man asked Hudhayfa, 'Should I ask permission to enter where my mother is?' He replied, 'If you were not to ask her permission, you would see what you dislike.'"
حَدَّثَنَا آدَمُ، قَالَ: حَدَّثَنَا شُعْبَةُ، عَنْ أَبِي إِسْحَاقَ قَالَ: سَمِعْتُ مُسْلِمَ بْنَ نَذِيرٍ يَقُولُ: سَأَلَ رَجُلٌ حُذَيْفَةَ فَقَالَ: أَسْتَأْذِنُ عَلَى أُمِّي؟ فَقَالَ: إِنْ لَمْ تَسْتَأْذِنْ عَلَيْهَا رَأَيْتَ مَا تَكْرَهُ.
also referenced under: Hadith 1060 (Reference) & Book 43, Hadith 10 (In-Book)