بُلُوغُ الْمَرَامِ
Bulugh al-Maram 687
Fasting
وَعَنْ نُبَيْشَةَ اَلْهُذَلِيِّ - رضى الله عنه - قَالَ: قَالَ رَسُولُ اَللَّهِ - صلى الله عليه وسلم -{ أَيَّامُ اَلتَّشْرِيقِ أَيَّامُ أَكْلٍ وَشُرْبٍ, وَذِكْرٍ لِلَّهِ عَزَّ وَجَلَّ } رَوَاهُ مُسْلِمٌ [1] .
Nubaishah Al-Hudhali (RAA) narrated that The Messenger of Allah (ﷺ) said: “The days of Tashriq (the three days following 'Idul Ad-ha, i.e. 11th , 12th and 13th of Dhul Hijjah) are days of eating, drinking and remembering (dhikr) of Allah, the Most Great and Glorious." Related by Muslim.
Arabic/English book reference: Book 5, Hadith 707