Al-Kāfi

Hadith 2184
etiquette
8ـ مُحَمَّدُ بْنُ يَحْيَى عَنْ أَحْمَدَ بْنِ مُحَمَّدِ بْنِ عِيسَى عَنِ ابْنِ مَحْبُوبٍ عَنْ عَبْدِ الله بْنِ سِنَانٍ عَنْ أَبِي عَبْدِ الله (عَلَيهِ السَّلام) قَالَ الْبَادِي بِالسَّلامِ أَوْلَى بِالله وَبِرَسُولِهِ.
8. Muhammad ibn Yahya has narrated from Ahmad ibn Muhammad ibn ‘Isa from ibn Mahbub from ‘Abd Allah ibn Sinan from Abu ‘Abdillah (a.s.) who has said the following: “The initiator of the offering of the greeting of peace is closer to Allah and His Messenger.”
Source: Shaykh Muḥammad b. Yaʿqūb al-Kulaynī