Surah Ghafir — Ayah 30 (40:30)
وَقَالَ ٱلَّذِيٓ ءَامَنَ يَٰقَوۡمِ إِنِّيٓ أَخَافُ عَلَيۡكُم مِّثۡلَ يَوۡمِ ٱلۡأَحۡزَابِ ٣٠
English translation (Saheeh International)
And he who believed said, "O my people, indeed I fear for you [a fate] like the day of the companies1 -
- - i.e., the days on which Allāh sent His punishment upon those who rejected their prophets in former times.
Brief commentary
And the one who brought faith said, advising his people: “I fear for you, if you kill Moses unjustly and oppressively, a punishment like the punishment of the groups that united against their prophets previously, then Allah destroyed them.