Kitāb al-Muʾmin
Hadith 3838 - وعن أبي عبد الله (ع) قال أخذَ الله ميثاقَ المؤمن ِعلى ألاّ يُصَدّقَ في مقالته ولا يُنتَصَفَ من عَدوّه.
38. It has been narrated that Abu 'Abd Allah (a.s) said: Allah has taken a pledge from the believer that his words will be belied and that he would not be able to avenge himself against his enemy.