en_tn_lite_do_not_use/exo/21/18.md

is confined to his bed

This can be stated in active form. AT: "cannot get out of bed" or "has to stay in bed" (See: rc://en/ta/man/translate/figs-activepassive)

recovers

"gets better"

staff

This is a stick that can be leaned on for support while walking.

the loss of his time

This refers to a situation when someone cannot work to earn money. You can express this clearly in the translation. AT: "the time he could not work" (See: rc://en/ta/man/translate/figs-explicit)

pay for his complete recovery

"pay his medical costs" or "pay for his costs for healing"