Al-Kāfi
Hadith 124214ـ عَنْهُ عَنْ عَمْرِو بْنِ عُثْمَانَ عَنْ مُحَمَّدِ بْنِ سَالِمٍ رَفَعَهُ قَالَ قَالَ أَمِيرُ الْمُؤْمِنِينَ (عَلَيهِ السَّلام) يَنْبَغِي لِلرَّجُلِ الْمُسْلِمِ أَنْ يَجْتَنِبَ مُوَاخَاةَ الْكَذَّابِ فَإِنَّهُ يَكْذِبُ حَتَّى يَجِيءَ بِالصِّدْقِ فَلا يُصَدَّقُ.
14. It is narrated from him (narrator of the Hadith above) from ‘Amr ibn ‘Uthman from Muhammad ibn Salim in a marfu’ manner from Amir al-Mu’minin, Ali ibn abu Talib (a.s.) who has said the following: “It is very proper for a Muslim man to avoid friendship and brotherhood with a liar; he lies and, even if he comes with truth, he is not believed and trusted.”