عَنْ أَبِي مَسْعُودٍ الْأَنْصَارِيِّ رَضِيَ اللَّهُ عَنْهُ قَالَ قَالَ رَسُولُ اللَّهِ صَلَّى اللَّهُ عَلَيْهِ وَآلِهِ وَسَلَّمَ {قُلْ هُوَ اللَّهُ أَحَدٌ} [الإخلاص: 1] تَعْدِلُ ثُلُثَ الْقُرْآنِ
Narrated by Sayyiduna Abu Mas’ud Ansari (may Allah be pleased with him): The Noble Prophet (peace and blessings be upon him and his family) said: Surah Al-Ikhlas is equal to one third of the Noble Qur’an.