Abdur Rahman ibn Yazeed reported: Ibn Mas’ud, may Allah be pleased with him, said regarding Surah Bani Isra’eel, Surah Al-Kahf, Surah Maryam, Surah TaHa, and Surah Al-Anbiya, “They were among the first chapters to be revealed and they are my treasures.”
Source: Sahih Bukhari 4708
Grade: Sahih (authentic) according to Al-Bukhari
عَبْدَ الرَّحْمَنِ بْنَ يَزِيدَ بْنِ قَيْسٍ سَمِعْتُ ابْنَ مَسْعُودٍ يَقُولُ فِي بَنِي إِسْرَائِيلَ وَالْكَهْفِ وَمَرْيَمَ وَطه وَالْأَنْبِيَاءِ إِنَّهُنَّ مِنْ الْعِتَاقِ الْأُوَلِ وَهُنَّ مِنْ تِلَادِي
4708 صحيح البخاري كِتَاب فَضَائِلِ الْقُرْآنِ إنما نزل أول ما نزل منه سورة من المفصل فيها ذكر الجنة والنار