Qur'an 10:20

وَيَقُولُونَ لَوْلَآ أُنزِلَ عَلَيْهِ ءَايَةٌ مِّن رَّبِّهِۦ ۖ فَقُلْ إِنَّمَا ٱلْغَيْبُ لِلَّهِ فَٱنتَظِرُوٓا۟ إِنِّى مَعَكُم مِّنَ ٱلْمُنتَظِرِينَ

“And they say, "Why is a sign not sent down to him from his Lord?" So say, "The unseen is only for Allāh [to administer], so wait; indeed, I am with you among those who wait."”

Yunus 10:20 · Saheeh International