بُلُوغُ الْمَرَامِ
Bulugh al-Maram 688
Fasting
وَعَنْ عَائِشَةَ وَابْنِ عُمَرَ رَضِيَ اَللَّهُ عَنْهُمْ قَالَا: { لَمْ يُرَخَّصْ فِي أَيَّامِ اَلتَّشْرِيقِ أَنْ يُصَمْنَ إِلَّا لِمَنْ لَمْ يَجِدِ اَلْهَدْيَ } رَوَاهُ اَلْبُخَارِيُّ [1] .
'A’isha and lbn 'Umar (RAA) narrated, ‘Nobody was allowed to fast on the days of Tashriq except for those, who could not afford the Hadi (sacrifice).' Related by Al-Bukhari.
Arabic/English book reference: Book 5, Hadith 708