The Source of Traditions on Imam al-Riḍā (Vol 2) · Hadith 63 (#Ḥadīth #63)

63 - وَبِهذَا الإِسنادِ قالَ: قالَ رَسُولُ اللَّهِ صَلَّى اللهُعَلَيْهِ وَآلِهِ: مَن بَهَتَ مُؤْمِناً أَوْ مُؤْمِنَةً أَوْ قالِ فِيهِ ما لَيسَ فِيهِ أَقامَهُ اللَّهُ يَوْمَ القِيامَةِ عَلَى تَلٍّ مِن نارٍ حَتّى يَخْرُجَ مِمَّا قالَهُ فِيهِ.

31-63 According to the same documentation, God’s Prophet (S) said, “God will hold whoever falsely accuses a believing man or woman over fire until he drops this accusation.”

Gradings are classical jarḥ-wa-taʿdīl, name-matched to a rijāl index (not individually re-verified).