حَدَّثَنَا سُرَيْجٌ حَدَّثَنَا ابْنُ أَبِي الزِّنَادِ عَنْ أَبِيهِ عَنْ أَبَانَ بْنِ عُثْمَانَ قَالَ سَمِعْتُ عُثْمَانَ بْنَ عَفَّانَ رَضِيَ اللَّهُ عَنْهُ وَهُوَ يَقُولُ قَالَ رَسُولُ اللَّهِ صَلَّى اللَّهُ عَلَيْهِ وَسَلَّمَ مَنْ قَالَ فِي أَوَّلِ يَوْمِهِ أَوْ فِي أَوَّلِ لَيْلَتِهِ بِسْمِ اللَّهِ الَّذِي لَا يَضُرُّ مَعَ اسْمِهِ شَيْءٌ فِي الْأَرْضِ وَلَا فِي السَّمَاءِ وَهُوَ السَّمِيعُ الْعَلِيمُ ثَلَاثَ مَرَّاتٍ لَمْ يَضُرَّهُ شَيْءٌ فِي ذَلِكَ الْيَوْمِ أَوْ فِي تِلْكَ اللَّيْلَةِ
مسند امام احمد بن حنبل · Hadith 474
It was narrated that Aban bin 'Uthman said: I heard 'Uthman bin 'Affan (RA) say: The Messenger of Allah (PBUH) said: "Whoever says at the beginning of the day or the beginning of the night, the Name of Allah with Whose name nothing on earth or in heaven can cause harm, and he is the All-Hearing, All-Knowing three times, nothing will harm him during that day or that night."
Translated by Dr. Muhammad Muhsin Khan · Reviewed by Islamic University of Madinah · Published March 2020