Sayyiduna Abdullah bin Abbas (may Allah be pleased with them both) said: "And Allah makes the verses clear to you" [Surah An-Nur: 18]: this refers to the verses which Allah revealed concerning Sayyidah Aishah and her innocence. "And Allah is All-Knowing, All-Wise" [Surah An-Nur: 18]: knowing the remorse that is in your hearts over what you had indulged in, wise in that He decreed eighty lashes for false accusation.
Hadith Referenceالمعجم الكبير للطبراني / مسند النساء / 19513