The Statement of Allah "And indeed, We have bestowed upon you seven Al-Mathãni (i.e., seven repeatedly recited Verses i.e., Sürat AI-Fatiha) and the Grand Qur'an." (V.15:87)
Narrated Abu Huraira:Allah's Messenger (ﷺ) said, "The Um (substance) of the Qur'an is the seven oft-repeated verses (Al- Mathaini) and is the Great Qur'an (i.e. Surat-al-Fatiha).
Reference
Sahih al-Bukhari 4704
In-book reference
Book 65, Hadith 226
USC-MSA web (English)
Vol. 6, Book 60, Hadith 227
Translation by Dr. M. Muhsin Khan · Language: EN
Sahih
Arabic Text
حَدَّثَنَا آدَمُ، حَدَّثَنَا ابْنُ أَبِي ذِئْبٍ، حَدَّثَنَا سَعِيدٌ الْمَقْبُرِيُّ، عَنْ أَبِي هُرَيْرَةَ ـ رضى الله عنه ـ قَالَ قَالَ رَسُولُ اللَّهِ صلى الله عليه وسلم " أُمُّ الْقُرْآنِ هِيَ السَّبْعُ الْمَثَانِي وَالْقُرْآنُ الْعَظِيمُ ".