Told to be upright, and it turned his hair grey
He said one sūrah had aged him, and named the verse in it.
فَٱسْتَقِمْ كَمَآ أُمِرْتَ وَمَن تَابَ مَعَكَ وَلَا تَطْغَوْا۟ ۚ إِنَّهُۥ بِمَا تَعْمَلُونَ بَصِيرٌ
Fa-staqim kamā umirta wa man tāba maʿaka wa lā taṭghaw…
“So remain on a right course as you have been commanded, [you] and those who have turned back with you [to Allāh], and do not transgress. Indeed, He is Seeing of what you do.”
Source
The Qur'an · 11:112
Qur'an
- Qur'anic text in the Uthmani script via Quran.com; translation: Saheeh International