"The Messenger of Allah prohibited plastering graves, writing on them, building over them, and treading on them."
Jami` at-Tirmidhi Book 10, Hadith 88
← Previous Hadith from the Prophet, similar (to no. 1050), but it does not contain "From Abu Idris" and this is what is correct.

Jami` at-Tirmidhi Book 10, Hadith 87 Next Hadith → "The Messenger of Allah passed by the graves of Al-Madinah, so he turned his face towards them and said: (As-Salamu alaikum ya ahlul-qubur! Yaghfirul-lahu lana wa lakun, antum salafuna wa nahnu bil-athar.) 'Peace be upon you O inhabitants of the grave! May Allah forgive us and you; you are our predecessors and we are to follow you.'"

Jami` at-Tirmidhi Book 10, Hadith 89