2353An NasaiSahih (Darussalam)أَخْبَرَنَا مُحَمَّدُ بْنُ عَبْدِ الأَعْلَى، قَالَ حَدَّثَنَا الْمُعْتَمِرُ، قَالَ سَمِعْتُ عُبَيْدَ اللَّهِ، عَنْ نَافِعٍ، عَنِ ابْنِ عُمَرَ، قَالَ إِذَا لَمْ يُجْمِعِ الرَّجُلُ الصَّوْمَ مِنَ اللَّيْلِ فَلاَ يَصُمْ .It was narrated that Ibn 'Umar said:"If a man does not intend to fast from the night before, he should not fast."Reference: Sunan an-Nasa'i 2342 In-book : Book 22, Hadith 253 English translation : Vol. 3, Book 22, Hadith 2344