Quran 21:5 — The Prophets (Al-Anbya')

بَل قالوا أَضغٰثُ أَحلٰمٍ بَلِ افتَرىٰهُ بَل هُوَ شاعِرٌ فَليَأتِنا بِـٔايَةٍ كَما أُرسِلَ الأَوَّلونَ

They even said, "Hallucinations," "He made it up," and, "He is a poet. Let him show us a miracle like those of the previous messengers."

[21:4] He said, "My Lord knows every thought in the heaven and the earth. He is the Hearer, the Omniscient."

[21:6] We never annihilated a believing community in the past. Are these people believers?