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Qurʾān Bukhārī Muslim Nasāʾī Abū Dāwūd Tirmidhī Ibn Mājah Mālik Aḥmad Dārimī Ḥākim Ibn Ḥibbān Ṭabarānī Nasāʾī's Kubrá Bayhaqī al-Luʾluʾ wa-al-Marjān Ibn Rajab's Fifty Riyāḍ al-Ṣāliḥīn Aḥmad's Zuhd Suyūṭī
bayhaqi:8187 – Abū Zakariyyā b. Abū Isḥāq And ʾAbū Bakr b. al-Ḥasan > Abū al-ʿAbbās Muḥammad b. Yaʿqūb > Baḥr b. Naṣr > Quriʾ > ʿAbdullāh b. Wahb Akhbarak Sufyān al-Thawrī > Manṣūr b. al-Muʿtamir > Ribʿī b. Ḥirāsh

[Machine] Some of the companions of the Prophet ﷺ said, "People started fasting for thirty days."  

البيهقي:٨١٨٧ – أَخْبَرَنَا أَبُو زَكَرِيَّا بْنُ أَبِي إِسْحَاقَ وَأَبُو بَكْرِ بْنُ الْحَسَنِ قَالَا ثنا أَبُو الْعَبَّاسِ مُحَمَّدُ بْنُ يَعْقُوبَ ثنا بَحْرُ بْنُ نَصْرٍ قَالَ قُرِئَ عَلَى عَبْدِ اللهِ بْنِ وَهْبٍ أَخْبَرَكَ سُفْيَانُ الثَّوْرِيُّ عَنْ مَنْصُورِ بْنِ الْمُعْتَمِرِ عَنْ رِبْعِيِّ بْنِ حِرَاشٍ

عَنْ بَعْضِ أَصْحَابِ النَّبِيِّ ﷺ قَالَ أَصْبَحَ النَّاسُ صِيَامًا لِثَلَاثِينَ