The Book of Asceticism · Hadith 65 (#Ḥadīth #6)
Chapter 3 | On Good Character, Kindness and Anger
حماد بن عيسى عن ربعي قال قال: أبو عبد الله عليه السلام ليحيى السقاء: يا محيى ان الخلق الحسن يسر وان الخلق السئ نكد.
6.Ḥammād ibn ʿĪsā narrated from Ribʿī who said, “Abū ʿAbdillāh said to Yaḥyā al-Saqqāʾ, ‘O Yaḥyā, verily good character is a means of ease, and verily bad character causes difficulty.’”
Gradings are classical jarḥ-wa-taʿdīl, name-matched to a rijāl index (not individually re-verified).