Nahj al-Balāgha

Hadith 2057
lovebackbiting-slander
٤٦٩. وَقَالَ (عليه ‏السلام): يَهْلِكُ فِيَّ رَجُلاَنِ: مُحِبٌّ مُفْرِطٌ، وَبَاهِتٌ مُفْتَرٍ.
469. Amīr al-mu’minīn, peace be upon him, said: Two types of persons will fall into ruin over me: The one who loves exaggerates and the other who lays false and baseless blames.
Source: al-Sharīf al-Raḍī