2350An NasaiSahih (Darussalam)أَخْبَرَنَا إِسْحَاقُ بْنُ إِبْرَاهِيمَ، قَالَ أَنْبَأَنَا سُفْيَانُ، عَنِ الزُّهْرِيِّ، عَنْ حَمْزَةَ بْنِ عَبْدِ اللَّهِ بْنِ عُمَرَ، عَنْ حَفْصَةَ، قَالَتْ لاَ صِيَامَ لِمَنْ لَمْ يُجْمِعِ الصِّيَامَ قَبْلَ الْفَجْرِ .It was narrated that Hafsah said:"There is no fast for the one who does not intend to fast before dawn.Reference: Sunan an-Nasa'i 2339 In-book : Book 22, Hadith 250 English translation : Vol. 3, Book 22, Hadith 2341