Abū Saʿīd al-Aḥmasī Bi-al-Kūfah > al-Ḥusayn b. Ḥumayd b. al-Rabīʿ > al-Ḥusayn b. ʿAlī al-Sulamī > Muḥammad b. Ḥassān > Muḥammad b. Jaʿfar al-Ṣādiq from his father from his grandfather > ʿAlī

Allah ﷻ gathered knowledge for all prior ˹nations˺ for Nūḥ and strengthened him with the Rūḥ (Holy Spirit). He then invited his nation ˹to Islam˺ privately and publically for nine hundred and fifty years. Any time a generation passed and ˹the next˺ generation followed them in their ˹corruption˺ and thus they increased in disbelief and transgression. The ḥadīth has a ṣaḥīḥ chain but they (Bukhāri and Muslim) did not collect it. – Sound

أَخْبَرَنِي أَبُو سَعِيدٍ الْأَحْمَسِيُّ بِالْكُوفَةِ ثنا الْحُسَيْنُ بْنُ حُمَيْدِ بْنِ الرَّبِيعِ ثنا الْحُسَيْنُ بْنُ عَلِيٍّ السُّلَمِيُّ ثنا مُحَمَّدُ بْنُ حَسَّانَ ثنا مُحَمَّدُ بْنُ جَعْفَرٍ الصَّادِقُ عَنْ أَبِيهِ عَنْ جَدِّهِ عَنْ عَلِيٍّ قَالَ

جَمَعَ رَبُّنَا ﷻ لِنُوحٍ عِلْمَ الْمَاضِينَ كُلِّهِمْ وَأَيَّدَهُ بِرُوحٍ مِنْهُ فَدَعَا قَوْمَهُ سِرًّا وَعَلَانِيَةً تِسْعَ مِائَةٍ وَخَمْسِينَ سَنَةً كُلَّمَا مَضَى قَرْنٌ اتَّبَعَهُ قَرْنٌ فَزَادَهُمْ كُفْرًا وَطُغْيَانًا هَذَا حَدِيثٌ صَحِيحُ الْإِسْنَادِ وَلَمْ يُخَرِّجَاهُ صحيح – صحيح