Al-Kāfi

Hadith 467
etiquette
5ـ حُمَيْدُ بْنُ زِيَادٍ عَنِ الْحَسَنِ بْنِ مُحَمَّدٍ عَنْ سَمَاعَةَ عَنْ غَيْرِ وَاحِدٍ عَنْ أَبَانٍ عَنْ أَبِي يَحْيَى قَالَ قَالَ أَبُو عَبْدِ الله (عَلَيْهِ الْسَّلام) تَمَامُ الْعِيَادَةِ أَنْ تَضَعَ يَدَكَ عَلَى الْمَرِيضِ إِذَا دَخَلْتَ عَلَيْهِ.
5. Humayd ibn Ziyad narrated from al-Hassan ibn Muhammad from Sama‘ah from more than one person from Aban from abu Yahya who has said the following: “Abu ‘Abd Allah (a.s.), has said, ‘Visit of a patient is complete when you place your hand on him when you meet him.’”
Source: Shaykh Muḥammad b. Yaʿqūb al-Kulaynī