Surah Al-Mujadila 58:10

إِنَّمَا ٱلنَّجْوَىٰ مِنَ ٱلشَّيْطَـٰنِ لِيَحْزُنَ ٱلَّذِينَ ءَامَنُوا۟ وَلَيْسَ بِضَآرِّهِمْ شَيْـًٔا إِلَّا بِإِذْنِ ٱللَّهِ ۚ وَعَلَى ٱللَّهِ فَلْيَتَوَكَّلِ ٱلْمُؤْمِنُونَ

Private conversation is only from Satan that he may grieve those who have believed, but he will not harm them at all except by permission of Allāh. And upon Allāh let the believers rely.

Translation: Saheeh International

Tafsir

Secret conversations tainted with sin and the like are of the work of Satan a result of his deception that those who believe may end up grieving; but he cannot harm them in any way except God’s leave that is except by His will. And in God let the believers put all their trust.

Excerpt from Tafsir al-Jalalayn, commentary on 58:10, via Quran.com. The reader has the full commentary and 9 more tafsirs.