Al-Kāfi

Hadith 408
kindness
11ـ عِدَّةٌ مِنْ أَصْحَابِنَا عَنْ سَهْلِ بْنِ زِيَادٍ عَنْ عَلِيِّ بْنِ حَسَّانَ عَنْ مُوسَى بْنِ بَكْرٍ عَنْ أَبِي الْحَسَنِ مُوسَى (عَلَيهِ السَّلام) قَالَ الرِّفْقُ نِصْفُ الْعَيْشِ.
11. A number of our people have narrated from Sahl ibn Ziyad from Ali ibn Hassan from Musa ibn Bakr from abu al-Hassan Musa (a.s.) who has said the following: “Friendliness is half of livelihood.”
Source: Shaykh Muḥammad b. Yaʿqūb al-Kulaynī