“Visit the graves, for they will remind you of the Hereafter.”
Sunan Ibn Majah Book 6, Hadith 137
← Previous Hadith “While I was walking with the Messenger of Allah (ﷺ) he said: ‘O son of Khasasiyyah, why are you angry with Allah when you are walking with the Messenger of Allah?’ I said: ‘O Messenger of Allah! I am not angry with Allah at all. Allah has bestowed all good on me.’ Then he passed by the graves of the Muslims and said: ‘They have caught up with a great deal of good.’ Then he passed by the graves of the idolaters and said: ‘They died before a great deal of good came to them.’ Then he turned and saw a man walking between the graves in his shoes and he said: ‘O you with the shoes, take them off.’” Muhammad bin Bashar narrated from Abdur-Rahman bin Mahdi that he said: Abdullah bin Uthman used to say (about this hadith): "A good hadith and a reliable narrator."

Sunan Ibn Majah Book 6, Hadith 136 Next Hadith → It was narrated from ‘Aishah that the Messenger of Allah (ﷺ) gave permission for visiting the graves.

Sunan Ibn Majah Book 6, Hadith 138