The origin of Proto-EthS *ḳʷsl ‘to be wounded’ is uncertain. Leslau tentatively accepts A. Dillmann’s equation with Arb. qṣl = qṭˁ with dissimilation of emphatics (LLA 431, LA 11 664).
Geez
ḳʷasla - to be wounded, be injured, be covered with sores, be in pain
(CDG 446)