٣٣ : ٨
لِّيَسۡـَٔلَ ٱلصَّٰدِقِينَ عَن صِدۡقِهِمۡۚ وَأَعَدَّ لِلۡكَٰفِرِينَ عَذَابًا أَلِيمٗا
so that He may question the truthful about their truthfulness, and He has prepared for the disbelievers a painful punishment.
شرح ومعانٍ · ١
- i.e., so that He may ask the "prophets" what they conveyed and what response they received. The "truthful" may also refer to those who believed in the prophets’ message and imparted it to others.