وَمِنَ الشَّياطينِ مَن يَغوصونَ لَهُ وَيَعمَلونَ عَمَلًا دونَ ذٰلِكَ ۖ وَكُنّا لَهُم حافِظينَ

To him, we assigned some devils who dived and performed various minor tasks, but We kept them under strict control.