حَدَّثَنَا مُحَمَّدُ بْنُ کَثِيرٍ حَدَّثَنَا هَمَّامٌ عَنْ أَنَسٍ أَخِي مُحَمَّدٍ عَنْ ابْنِ مِلْحَانَ الْقَيْسِيِّ عَنْ أَبِيهِ قَالَ کَانَ رَسُولُ اللَّهِ صَلَّی اللَّهُ عَلَيْهِ وَسَلَّمَ يَأْمُرُنَا أَنْ نَصُومَ الْبِيضَ ثَلَاثَ عَشْرَةَ وَأَرْبَعَ عَشْرَةَ وَخَمْسَ عَشْرَةَ قَالَ وَقَالَ هُنَّ کَهَيْئَةِ الدَّهْرِ
سنن ابودوٗد · Hadith 2449
Narrated Qatadah Ibn Malhan al-Qaysi: The Messenger of Allah ﷺ used to command us to fast the days of the white (nights): thirteenth, fourteenth and fifteenth of the month. He said: This is like keeping perpetual fast.
Translated by Dr. Muhammad Muhsin Khan · Reviewed by Islamic University of Madinah · Published March 2020