(96) باب الزِّيَادَةِ عَلَى الْقَبْرِ
It was narrated that Jabir said:
"The Messenger of Allah forbade building over graves, making them larger or plastering over them." (One of two narrators) Sulaiman bin Musa added: "Or writing on them."
Reference: Sunan an-Nasa'i 2027
In-book reference: Book 21, Hadith 211
English translation: Vol. 3, Book 21, Hadith 2029