The believer neither accepts falsehood from a friend, nor rejects the truth from an enemy

الْمُؤْمِنُ لَا يَقْبَلُ الْبَاطِلَ مِنْ صَدِيقِهِ، وَ لَا يَرُدُّ الْحَقَّ عَلَى عَدُوِّهِ.

The believer neither accepts falsehood from a friend, nor rejects the truth from an enemy.

Bihar al-Anwar, vol. 64, pg. 311