حَدَّثَنَا يَحْيَى بْنُ بِشْرٍ، قَالَ: حَدَّثَنَا الْحَكَمُ بْنُ الْمُبَارَكِ، قَالَ: حَدَّثَنَا عَبَّادٌ يَعْنِي ابْنَ عَبَّادٍ، عَنْ عَاصِمٍ الأَحْوَلِ، عَنْ أَبِي عُثْمَانَ النَّهْدِيِّ قَالَ: كَتَبَ أَبُو مُوسَى إِلَى رُهْبَانٍ يُسَلِّمُ عَلَيْهِ فِي كِتَابِهِ، فَقِيلَ لَهُ: أَتُسَلِّمُ عَلَيْهِ وَهُوَ كَافِرٌ؟ قَالَ: إِنَّهُ كَتَبَ إِلَيَّ فَسَلَّمَ عَلَيَّ، فَرَدَدْتُ عَلَيْهِ.
Abu 'Uthman an-Nahdi said, "Abu Musa wrote to a Persian grandee and greeted him in his letter. He was asked, 'Do you greet him when he is an unbeliever?' He replied, 'He wrote to me and greeted me, so I have answered him.'"
Source: Al-Adab Al-Mufrad — repository translation · Imam Muhammad ibn Ismail al-Bukhari — authenticity/grade metadata requires independent source review · Sunnah.comAudio not available for the selected reciter.
Source: Al-Adab Al-Mufrad — repository arabic · Imam Muhammad ibn Ismail al-Bukhari · Sunnah.com