once
قَدَرُ اللَّهُ وَمَا شَاءَ فَعَلَ
Edition transliteration
Qaddaral-lah, wama shaa faAAal.
Meaning
(Allah has decreed and what He wills, He does.)(for verily ‘If’ lets in the work of the devil.)
Source and references
Hisn al-Muslim, entry 144.The reference is copied from the edition; separate editorial verification is not complete yet.
Source edition: Fortress of the Muslim. Open source ↗