From: Luhya, East Africa
Source: Luhya (Kenya) oral-tradition proverb (Namunyu Khabolela libhale wakhasila waulile); documented in Tim Wambunya, "Luyia Proverbs (from Kisa, Marama, Tsotso and Wanga)" (2005) — hyena/stone entry
The meaning given here is our own reading. Other interpretations exist.