Al-Kāfi
Hadith 21965ـ مُحَمَّدُ بْنُ يَحْيَى عَنْ أَحْمَدَ بْنِ مُحَمَّدٍ عَنْ عُمَرَ بْنِ عَبْدِ الْعَزِيزِ عَنْ جَمِيلٍ عَنْ أَبِي عَبْدِ الله (عَلَيهِ السَّلام) قَالَ إِذَا كَانَ قَوْمٌ فِي مَجْلِسٍ ثُمَّ سَبَقَ قَوْمٌ فَدَخَلُوا فَعَلَى الدَّاخِلِ أَخِيراً إِذَا دَخَلَ أَنْ يُسَلِّمَ عَلَيْهِمْ.
5. Muhammad ibn Yahya has narrated from Ahmad ibn Muhammad from ‘Umar ibn ‘Abd al-‘Aziz from Jamil from Abu ‘Abdillah (a.s.) who has said the following: “If two groups attend the same meeting, the group entering last should offer greetings of peace to those who have entered first.”