(33) باب النَّهْىِ عَنِ الْجُلُوسِ، عَلَى الْقَبْرِ وَالصَّلاَةِ عَلَيْهِ
Abu Marthad al-Ghanawi reported Allah's Messenger (ﷺ) as saying:
Do not pray facing towards the graves, and do not sit on them. (IT)
Reference (IT): Sahih Muslim 972 b (IT)
In-book reference (IT): Book 11, Hadith 127 (IT)
USC-MSA web (English) reference(deprecated numbering scheme): Book 4, Hadith 2122 (IT)