Al-Quddus — The Most Pure

Utterly free of flaw, need and likeness — the One before whom the angels themselves declare holiness.

Calling on Allah by this name

The Qur’an’s own instruction: "And to Allah belong the most beautiful names — so call on Him by them" (7:180). When your need matches a name, use it: begin your dua with Yā Quddus and ask from that door.