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
bayhaqi:8106 – Abū ʿAbdullāh al-Ḥāfiẓ > Abū Bakr b. Isḥāq > Muḥammad b. Ghālib > ʿAmr b. Marzūq > Shuʿbah > Manṣūr > Hilāl / Ibn Yasāf > al-Hazhāz > Ibn Masʿūd

[Machine] During fasting, there is a strong emphasis on not breaking the fast by mistake or unintentionally. This is considered crucial.  

البيهقي:٨١٠٦ – أَخْبَرَنَا أَبُو عَبْدِ اللهِ الْحَافِظُ أنبأ أَبُو بَكْرِ بْنُ إِسْحَاقَ أنبأ مُحَمَّدُ بْنُ غَالِبٍ ثنا عَمْرُو بْنُ مَرْزُوقٍ أنبأ شُعْبَةُ عَنْ مَنْصُورٍ قَالَ سَمِعْتُ هِلَالًا يَعْنِي ابْنَ يَسَافٍ يُحَدِّثُ عَنِ الْهَزْهَازِ أَنَّ ابْنَ مَسْعُودٍ قَالَ

فِي الْقُبْلَةِ لِلصَّائِمِ قَوْلًا شَدِيدًا يَعْنِي يَصُومُ يَوْمًا مَكَانَهُ وَهَذَا عِنْدَنَا فِيهِ إِذَا قَبَّلَ فَأَنْزَلَ