«شُغْلِ الْمِعَلِّمْ لِابْنُهْ»

The saying praises an object or piece of work that is flawlessly made. Here المعلم means the master of a trade or workshop, not a schoolteacher. It pictures such a craftsman making something for his own child, when he would naturally give his finest effort and leave nothing careless or half-finished.

Applied more broadly, it labels any result as top-quality and thoroughly reliable. The son belongs to the image of care and effort: the expression praises the quality of the thing itself, not family relationships or the people involved.

Say it when admiring something built, sewn, cooked or repaired with unusual care and skill, such as a sturdy piece of furniture or a neatly finished garment, to signal that no corners were cut and the result reflects a master's best effort.