Greeting of Peace and Non-Muslims
Al-Kāfi|Volume 2|Book 4|Chapter 11
3ـ عِدَّةٌ مِنْ أَصْحَابِنَا عَنْ أَحْمَدَ بْنِ مُحَمَّدِ بْنِ خَالِدٍ عَنْ عُثْمَانَ بْنِ عِيسَى عَنْ سَمَاعَةَ قَالَ سَأَلْتُ أَبَا عَبْدِ الله (عَلَيهِ السَّلام) عَنِ الْيَهُودِيِّ وَالنَّصْرَانِيِّ وَالْمُشْرِكِ إِذَا سَلَّمُوا عَلَى الرَّجُلِ وَهُوَ جَالِسٌ كَيْفَ يَنْبَغِي أَنْ يَرُدَّ عَلَيْهِمْ فَقَالَ يَقُولُ عَلَيْكُمْ.
3. A number of our people have narrated from Ahmad ibn Muhammad ibn Khalid from ‘Uthman ibn ‘Isa from Sama’a who has said the following: “Once I asked Abu ‘Abdillah عليه السلام about Jewish, Christians and pagans’ greetings to one sitting, how should he respond? The Imam said, ‘He will say, ‘ ‘Alaykum’”
- Mirʾāt al-ʿUqūl fī Sharḥ Akhbār Āl al-Rasūl (12/546)
- Ṣaḥīḥ al-Kāfī, vol. 1, p. 164