Bulugh al-Maram #347
كتاب الصلاة
وَعَنْ عَبْدِ اَللَّهِ بْنِ أَبِي أَوْفَى -رَضِيَ اَللَّهُ عَنْهُمَا- قَالَ: "جَاءَ رَجُلٌ إِلَى اَلنَّبِيِّ - صلى الله عليه وسلم -فَقَالَ: إِنِّي لَا أَسْتَطِيعُ أَنْ آخُذَ مِنْ اَلْقُرْآنِ شَيْئًا, فَعَلِّمْنِي مَا يُجْزِئُنِيٌ[مِنْهُ]. قَالَ: "سُبْحَانَ اَللَّهِ, وَالْحَمْدُ لِلَّهِ, وَلَا إِلَهَ إِلَّا اَللَّهُ وَاَللَّهُ أَكْبَرُ, وَلَا حَوْلٌ وَلَا قُوَّةً إِلَّا بِاَللَّهِ اَلْعَلِيِّ اَلْعَظِيمِ..." اَلْحَدِيثَ. رَوَاهُ أَحْمَدُ, وَأَبُو دَاوُدَ, وَالنَّسَائِيُّ, وَصَحَّحَهُ اِبْنُ حِبَّانَ, وَاَلدَّارَقُطْنِيُّ, وَالْحَاكِمُ.
Narrated 'Abdullah bin Abi Aufa (RA):
A man came to the Prophet (ﷺ) and said, “I cannot memorize anything from the Qur'an, so teach me something which can be a substitute for me.” He said, “Say Subhan Allah (Allah is Free of Imperfections) walhamdu lillah (and praise is to Allah), wa la ilaha illa-Allah (and there is nothing worthy of worship except Allah), wallahu akbar (and Allah is the Most Great), wa la hawla wa la quwwata illa billah al-'Ali al-'Adheem (and there is no might and no strength but in Allah, the Most High, the Supreme)”
[Reported by Ahmad, Abu Dawud and An-Nasa'i; and Ibn Hibban, ad-Daraqutni and Al-Hakim graded it Sahih (authentic)].