(36) باب اسْتِئْذَانِ النَّبِيِّ صلى الله عليه وسلم رَبَّهُ عَزَّ وَجَلَّ فِي زِيَارَةِ قَبْرِ أُمِّهِ
Abu Huraira reported Allah's Messenger, (ﷺ) as saying:
I sought permission to beg forgiveness for my mother, but He did not grant it to me. I sought permission from Him to visit her grave, and He granted it (permission) to me.
Reference: Sahih Muslim 976 a
In-book reference: Book 11, Hadith 134
USC-MSA web (English) reference(deprecated numbering scheme): Book 4, Hadith 2129