“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.’” (Using translation from Ibn Mājah 1492)
مَرُّوا عَلَى رَسُولِ اللهِ ﷺ بِجِنَازَةٍ فَأَثْنَوْا عَلَيْهَا خَيْرًا فِي مَنَاقِبِ الْخَيْرِ فَقَالَ رَسُولُ اللهِ ﷺ وَجَبَتْ ثُمَّ مَرُّوا عَلَيْهِ بِجِنَازَةٍ أُخْرَى فَأَثْنَوْا عَلَيْهَا شَرًّا فِي مَنَاقِبِ الشَّرِّ فَقَالَ رَسُولُ اللهِ ﷺ وَجَبَتْ إِنَّكُمْ شُهَدَاءُ اللهِ فِي الْأَرْضِ