Qur'an 11:93

وَيَـٰقَوْمِ ٱعْمَلُوا۟ عَلَىٰ مَكَانَتِكُمْ إِنِّى عَـٰمِلٌ ۖ سَوْفَ تَعْلَمُونَ مَن يَأْتِيهِ عَذَابٌ يُخْزِيهِ وَمَنْ هُوَ كَـٰذِبٌ ۖ وَٱرْتَقِبُوٓا۟ إِنِّى مَعَكُمْ رَقِيبٌ

“And O my people, work according to your position; indeed, I am working. You are going to know to whom will come a punishment that will disgrace him and who is a liar. So watch; indeed, I am with you a watcher, [awaiting the outcome]."”

Hud 11:93 · Saheeh International