Sahih al-Bukhari 1949
Book 30: Fasting · Narrated by Nafi`
Arabic
حَدَّثَنَا عَيَّاشٌ، حَدَّثَنَا عَبْدُ الأَعْلَى، حَدَّثَنَا عُبَيْدُ اللَّهِ، عَنْ نَافِعٍ، عَنِ ابْنِ عُمَرَ ـ رضى الله عنهما ـ قَرَأَ فِدْيَةٌ طَعَامُ مَسَاكِينَ. قَالَ هِيَ مَنْسُوخَةٌ.
English translation
Narrated Nafi`:Ibn `Umar recited the verse: "They had a choice either to fast or to feed a poor person for every day, and said that the order of this Verse was canceled
Reference: Sahih al-Bukhari 1949, Book of Fasting. English translation by Dr. Muhammad Muhsin Khan.