“A funeral (procession) passed by the Prophet (ﷺ) and they praised (the deceased) and spoke well of him. He said: ‘(Paradise is) guaranteed for him.’ Then another funeral passed by and they spoke badly of him, and he (the Prophet (ﷺ)) said: ‘(Hell is) guaranteed for him.’ It was said: ‘O Messenger of Allah, you said that (Paradise was) guaranteed for this one and that (Hell was) guaranteed for the other one.’ He said: ‘It is the testimony of the people, and the believers are the witnesses of Allah on earth.’”
Sunan Ibn Majah Book 6, Hadith 59
← Previous Hadith “If a funeral procession was brought and the number of people who followed it was considered to be small, they would be organized into three rows, then the funeral prayer would be offered.” He said: “The Messenger of Allah (ﷺ) said: ‘No three rows of Muslims offer the funeral prayer for one who has died, but he will be guaranteed (Paradise).’”

Sunan Ibn Majah Book 6, Hadith 58 Next Hadith → “A funeral passed by the Prophet (ﷺ) and they praised (the deceased) and spoke well of him and mentioned his good characteristics. He said: ‘(Paradise is) guaranteed for him.’ Then another funeral passed by and they spoke badly of him and mentioned his bad characteristics, and he the Prophet (ﷺ) said: ‘(Hell is) guaranteed for him. You are the witnesses of Allah on earth.’”

Sunan Ibn Majah Book 6, Hadith 60