“Whoever has the funeral prayer offered for him by one hundred Muslims, he will be forgiven.”
Sunan Ibn Majah Book 6, Hadith 56
← Previous Hadith “Abu Musa Ash’ari left instructions, when he was dying, saying: ‘Do not follow me with a censer.’* They said to him: ‘Did you hear something concerning that?’ He said: ‘Yes, from the Messenger of Allah (ﷺ).’”

Sunan Ibn Majah Book 6, Hadith 55 Next Hadith → “A son of ‘Abdullah bin ‘Abbas died, and he said to me: ‘O Kuraib! Get up and see if anyone has assembled (to pray) for my son.’ I said: ‘Yes.’ He said: ‘Woe to you, how many do you see? Forty?’ I said: ‘No, rather there are more.’ He said: ‘Take my son out, for I bear witness that I hear the Messenger of Allah (ﷺ) say: “No (group of) forty believers intercede for a believer, but Allah will accept their intercession.”

Sunan Ibn Majah Book 6, Hadith 57