Al-Kāfi

Hadith 159
generositymusa
13ـ عَلِيُّ بْنُ إِبْرَاهِيمَ رَفَعَهُ قَالَ أَوْحَى الله عَزَّ وَجَلَّ إِلَى مُوسَى (عَلَيْهِ السَّلاَم) أَنْ لا تَقْتُلِ السَّامِرِيَّ فَإِنَّهُ سَخِيٌّ.
13. Ali ibn Ibrahim has narrated in a marfu‘ manner saying: “He (the Imam) has said, ‘Allah the Most Majestic, the Most Glorious, sent revelation to Moses and told him not to kill the Samiriy because he was a generous person.”
Source: Shaykh Muḥammad b. Yaʿqūb al-Kulaynī