AHMAD-ZUHD 353:
from Mūsá —
[Machine] To know goodness and to learn it; for it is an enlightening for the teacher of goodness and their learner in their graves, so that they do not feel lonely in their place.
الزهد لأحمد ٣٥٣:
عن موسى —
أَنْ عَلِّمِ الْخَيْرَ وَتَعَلَّمْهُ؛ فَإِنَّهُ مُنَوَّرٌ لِمُعَلِّمِ الْخَيْرِ وَمُتَعَلِّمِهُ فِي قُبُورِهِمْ حَتَّى لَا يَسْتَوْحِشُوا لِمَكَانِهِمْ