The Book of Fasting
وَحَدَّثَنِي الْقَاسِمُ بْنُ زَكَرِيَّاءَ، حَدَّثَنَا حُسَيْنُ بْنُ عَلِيٍّ، عَنْ زَائِدَةَ، عَنْ إِسْمَاعِيلَ، عَنْ مُحَمَّدِ بْنِ سَعْدٍ، عَنْ أَبِيهِ، - رضى الله عنه - عَنِ النَّبِيِّ صلى الله عليه وسلم قَالَ " الشَّهْرُ هَكَذَا وَهَكَذَا وَهَكَذَا " . عَشْرًا وَعَشْرًا وَتِسْعًا مَرَّةً .Muhammad b. Sa'd reported on the authority of his father (Sa'd b. Abi Waqqas (Allah be pleased with him) that the Messenger of Allah (ﷺ) had said:Tho month is thus and thus, and thus, i. e. ten, ten and nine
From Sahih Muslim, whose reports the scholars accept as authentic.