that the Prophet ﷺ said: "Whoever says, 'In 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, will not be struck unaware by calamity until night comes, and whoever says it in the evening will not be struck unaware by calamity until morning comes, Allah Willing.”
أَنَّ النَّبِيَّ ﷺ قَالَ: «مَنْ قَالَ: (بِسْمِ اللهِ الَّذِي لَا يَضُرُّ مَعَ اسْمِهِ شَيْءٌ فِي الْأَرْضِ وَلا فِي السَّمَاءِ وَهُوَ السَّمِيعُ الْعَلِيمُ) ثَلاثَ مَرَّاتٍ، لَمْ تَفْجَأْهُ فَاجِئَةُ بَلاءٍ حَتَّى اللَّيْلِ، وَمَنْ قَالَهَا حِينَ يُمْسِي لَمْ تَفْجَأْهُ فَاجِئَةُ بَلاءٍ حَتَّى يُصْبِحَ إِنْ شَاءَ اللهُ۔»