Sura al-Aḥqāf 46:13

إِنَّ ٱلَّذِينَ قَالُوا۟ رَبُّنَا ٱللَّـهُ ثُمَّ ٱسْتَقَٰمُوا۟ فَلَا خَوْفٌ عَلَيْهِمْ وَلَا هُمْ يَحْزَنُونَ

inna lladhīna qālū rabbunā allāhu thumma istaqāmū fa-lā khawfun ʿalayhim wa-lā hum yaḥzanūna

Verily those who say, "Our Lord is Allah," and remain firm (on that Path),- on them shall be no fear, nor shall they grieve.