Caution: Translations of Quran and Ḥadīth may lead to possible misapplications and misinterpretations. This site is intended for students of sacred knowledge that are proficient in comprehending classical Arabic and have a strong foundation in Islamic sciences. Also note that religious injunctions rely on several aspects beyond what one may glean through reading individual aḥādīth.
Qurʾān Bukhārī Muslim Nasāʾī Abū Dāwūd Tirmidhī Ibn Mājah Mālik Aḥmad Dārimī Ḥākim Ibn Ḥibbān Ṭabarānī Nasāʾī's Kubrá Bayhaqī al-Luʾluʾ wa-al-Marjān Ibn Rajab's Fifty Riyāḍ al-Ṣāliḥīn Aḥmad's Zuhd Suyūṭī
nasai-kubra:2664 – Muḥammad b. ʿAbd al-Aʿlá > al-Muʿtamir > ʿUbaydullāh > Nāfiʿ > ʿAbdullāh

"If a man does not intend to fast from the night before, he should not fast." (Using translation from Nasāʾī 2342)  

الكبرى للنسائي:٢٦٦٤ – أَخْبَرَنَا مُحَمَّدُ بْنُ عَبْدِ الْأَعْلَى قَالَ حَدَّثَنَا الْمُعْتَمِرُ قَالَ سَمِعْتُ عُبَيْدَ اللهِ عَنْ نَافِعٍ عَنْ عَبْدِ اللهِ قَالَ

«إِذَا لَمْ يُجْمِعِ الرَّجُلُ الصَّوْمَ مِنَ اللَّيْلِ فَلَا يَصُمْ»  

See similar narrations below:

Collected by Nasāʾī, Bayhaqī
nasai:2342 – Muḥammad b. ʿAbd al-Aʿlá > al-Muʿtamir > ʿUbaydullāh > Nāfiʿ > Ibn ʿUmar

"If a man does not intend to fast from the night before, he should not fast."  

النسائي:٢٣٤٢ – 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  

bayhaqi:8037 – Abū ʿAbd al-Raḥman al-Sulamī And ʾAbū al-Qāsim ʿAbd al-Raḥman b. Muḥammad al-Sarrāj

"Whoever does not have the intention of fasting from the night before, then there is no fast for him." (Daif) (Using translation from Nasāʾī 2334)   

البيهقي:٨٠٣٧ – وَقَدْ حَدَّثَنَا أَبُو عَبْدِ الرَّحْمَنِ السُّلَمِيُّ وَأَبُو الْقَاسِمِ عَبْدُ الرَّحْمَنِ بْنُ مُحَمَّدٍ السَّرَّاجُ قَالَا أنبأ أَبُو الْحَسَنِ أَحْمَدُ بْنُ مُحَمَّدِ بْنِ عَبْدُوسٍ الطَّرَائِفِيُّ ثنا عُثْمَانُ بْنُ سَعِيدٍ الدَّارِمِيُّ ثنا سَعِيدُ بْنُ أَبِي مَرْيَمَ ثنا يَحْيَى بْنُ أَيُّوبَ عَنْ عَبْدِ اللهِ بْنِ أَبِي بَكْرٍ عَنِ ابْنِ شِهَابٍ عَنْ سَالِمٍ عَنْ أَبِيهِ عَنْ حَفْصَةَ

عَنْ رَسُولِ اللهِ ﷺ قَالَ مَنْ لَمْ يَجْمَعِ الصِّيَامَ مِنَ اللَّيْلِ فَلَا صِيَامَ لَهُ