Sayyiduna Abdullah bin Abbas (may Allah be pleased with them both) said: "Indeed, those who love that indecency should spread among the believers" [Surah An-Nur: 19]: this refers to the chaste men and women from among those who affirm the truth. "Will have a painful punishment" [Surah An-Nur: 19], meaning agonising. "In this world and the Hereafter" [Surah An-Nur: 19], meaning lashes in this world and the punishment of Hell in the Hereafter. "And Allah knows and you do not know" [Surah Al-Baqarah: 216], meaning He knows what you have fallen into and the severe punishment it carries, and you do not know the severity of Allah's intense anger towards whoever does such a thing.
Hadith Referenceالمعجم الكبير للطبراني / مسند النساء / 19515
Mujahid said concerning this verse: "Indeed, those who love that indecency should spread among the believers" [Surah An-Nur: 19]: meaning that (indecency) should become manifest through talk about the affair of Sayyidah Aishah (may Allah be pleased with her).
Hadith Referenceالمعجم الكبير للطبراني / مسند النساء / 19516
Qatadah said concerning this verse: "Indeed, those who love that indecency should spread among the believers will have a painful punishment" [Surah An-Nur: 19]: meaning fornication (zina).
Hadith Referenceالمعجم الكبير للطبراني / مسند النساء / 19517
Sa'id bin Jubayr said: "Indeed, those who" [Surah An-Nur: 19], meaning whoever accused Sayyidah Aishah, "love that indecency should spread" [Surah An-Nur: 19], meaning that fornication should spread and become manifest, "among the believers" [Surah An-Nur: 19], meaning concerning Safwan and Sayyidah Aishah, "will have a painful punishment" [Surah An-Nur: 19], meaning agonising, "in this world and the Hereafter" [Surah An-Nur: 19]. So the punishment of Abdullah bin Ubayy in this world was the hadd, and in the Hereafter the punishment of Hell. "And Allah knows and you do not know" [Surah Al-Baqarah: 216].
Hadith Referenceالمعجم الكبير للطبراني / مسند النساء / 19518
Qatadah said concerning this verse: "Indeed, those who love that indecency should spread among the believers" [Surah An-Nur: 19]: meaning that fornication should become manifest; for them is the punishment of Hell.
Hadith Referenceالمعجم الكبير للطبراني / مسند النساء / 19519