Bulugh al-Maram, Book 5, Hadith 688 (In-Book) ⓘ
'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.
وَعَنْ عَائِشَةَ وَابْنِ عُمَرَ رَضِيَ اَللَّهُ عَنْهُمْ قَالَا: { لَمْ يُرَخَّصْ فِي أَيَّامِ اَلتَّشْرِيقِ أَنْ يُصَمْنَ إِلَّا لِمَنْ لَمْ يَجِدِ اَلْهَدْيَ } رَوَاهُ اَلْبُخَارِيُّ 1. 1 - صحيح. رواه البخاري ( 4 / 242 / فتح ).
also referenced under: Book 5, Hadith 708 (English)