[Machine] Narrated by Abu Hurairah, the Prophet ﷺ used to command us to fast on the white days, which are the thirteenth, fourteenth, and fifteenth of each lunar month. He would also say, "Fasting the lifetime or the similitude of fasting the lifetime." This was reported by Shu'bah from Anas from 'Abdul-Malik ibn Al-Minhall from his father. However, there is doubt concerning this narration, and the correct narration is the Hadith of Hammam.
عَنِ النَّبِيِّ ﷺ أَنَّهُ كَانَ يَأْمُرُنَا بِصِيَامِ الْبِيضِ ثَلَاثَ عَشْرَةَ وَأَرْبَعَ عَشْرَةَ وَخَمْسَ عَشْرَةَ وَيَقُولُ «صَوْمُ الدَّهْرِ أَوْ كَهَيْئَةِ صَوْمِ الدَّهْرِ» هَكَذَا رَوَاهُ شُعْبَةُ عَنْ أَنَسٍ عَنْ عَبْدِ الْمَلِكِ بْنِ الْمِنْهَالِ عَنْ أَبِيهِ وَهَمَ فِيهِ وَالصَّوَابُ حَدِيثُ هَمَّامٍ