Surah Ash-Shu'ara 26:27

قَالَ إِنَّ رَسُولَكُمُ ٱلَّذِىٓ أُرْسِلَ إِلَيْكُمْ لَمَجْنُونٌ

[Pharaoh] said, "Indeed, your 'messenger' who has been sent to you is mad."

Translation: Saheeh International

Tafsir

He said ‘Verily this messenger of yours sent to you is a madman!’

Excerpt from Tafsir al-Jalalayn, commentary on 26:27, via Quran.com. The reader has the full commentary and 9 more tafsirs.