Proto-MSA

*wṣl - to help (SEDonline)

PWS
*wṣl - to come, to attain (HALOT 82)

Mehri
wīṣəl - to manage; to help (ML 431)
Jibbali
éṣəl - to manage to shoulder a burden (physically or psychologically (JL 293)
Soqotri
ö́ṣaḷ - to help (LS 70; CSOL I 478; CSOL II 395)