«اِللِّي يِعْمِلْ جِمِيلْ يِتِمُّهْ»

A helpful act loses much of its value when it is abandoned halfway. The saying urges a person who has begun doing someone a favor to finish the task rather than leave the recipient without the promised benefit.

It also conveys that goodwill is measured not merely by intention or a promising start, but by follow-through. In practical terms, it advises completing an undertaking so that the assistance offered becomes genuinely useful.

Used to encourage someone to finish a favor, charitable act, or other helpful undertaking after they have already begun it. It may also gently reproach incomplete assistance that leaves another person still unable to resolve the matter.