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.
tabarani:9563Muḥammad b. al-Naḍr al-Azdī > Muʿāwiyah b. ʿAmr > Zuhayr > Abū Isḥāq > al-Aswad b. Yazīd And ʿAlqamah Wamasrūq > ʿAbdullāh

[Machine] "Fasting is from the sighting of the crescent moon until its sighting. If it is hidden from you, then fast for thirty days."  

الطبراني:٩٥٦٣حَدَّثَنَا مُحَمَّدُ بْنُ النَّضْرِ الْأَزْدِيُّ ثنا مُعَاوِيَةُ بْنُ عَمْرٍو ثنا زُهَيْرٌ ثنا أَبُو إِسْحَاقَ عَنِ الْأَسْوَدِ بْنِ يَزِيدَ وَعَلْقَمَةَ وَمَسْرُوقٍ أَنَّ عَبْدَ اللهِ قَالَ

«الصِّيَامُ مِنْ رُؤْيَةِ الْهِلَالِ إِلَى رُؤْيَتِهِ فَإِنْ خَفِيَ عَلَيْكُمْ فَثَلَاثُونَ يَوْمًا»  


See similar narrations below:

Collected by Aḥmad, Ibn Ḥibbān
ahmad:9376ʿAffān > Ḥammād b. Salamah > Muḥammad b. Ziyād > Abū Hurayrah > Abū al-Qāsim ﷺ

[Machine] I heard Abu al-Qasim ﷺ say, "Fast when you see the crescent moon and break your fast when you see it. But if it is cloudy for you, then complete thirty days."  

أحمد:٩٣٧٦حَدَّثَنَا عَفَّانُ حَدَّثَنَا حَمَّادُ بْنُ سَلَمَةَ أَخْبَرَنَا مُحَمَّدُ بْنُ زِيَادٍ قَالَ سَمِعْتُ أَبَا هُرَيْرَةَ يَقُولُ

سَمِعْتُ أَبَا الْقَاسِمِ ﷺ يَقُولُ صُومُوا الْهِلَالَ لِرُؤْيَتِهِ وَأَفْطِرُوا لِرُؤْيَتِهِ فَإِنْ غُمَّ عَلَيْكُمْ فَعُدُّوا ثَلَاثِينَ  

ahmad:10060ʿAbd al-Raḥman > Ḥammād > Muḥammad b. Ziyād > Abū Hurayrah > Abū al-Qāsim ﷺ

[Machine] I heard Abu Al-Qasim ﷺ saying: "Fast when you see it (the new moon) and break your fast when you see it. But if it is cloudy for you, then complete the thirty (days of the previous month)."  

أحمد:١٠٠٦٠حَدَّثَنَا عَبْدُ الرَّحْمَنِ حَدَّثَنَا حَمَّادٌ عَنْ مُحَمَّدِ بْنِ زِيَادٍ قَالَ سَمِعْتُ أَبَا هُرَيْرَةَ يَقُولُ

سَمِعْتُ أَبَا الْقَاسِمِ ﷺ يَقُولُ صُومُوا لِرُؤْيَتِهِ وَأَفْطِرُوا لِرُؤْيَتِهِ فَإِنْ غُمَّ عَلَيْكُمْ فَعُدُّوا ثَلَاثِينَ  

ذِكْرُ الْبَيَانِ بِأَنَّ رُؤْيَةَ هِلَالِ شَوَّالٍ، إِذَا غُمَّ عَلَى النَّاسِ كَانَ عَلَيْهِمْ إِتْمَامُ رَمَضَانَ ثَلَاثِينَ يَوْمًا

ibnhibban:3457ʿAbdullāh b. Muḥammad al-Azdī > Isḥāq b. Ibrāhīm > ʿAbd al-Razzāq > Maʿmar > al-Zuhrī > Saʿīd b. al-Musayyib And ʾAbī Salamah or Aḥadihimā Shak Isḥāq > Abū Hurayrah

"the Messenger of Allah said: 'Fast when you see it and stop fasting when you see it, and if it is obscured from you (too cloudy), then count it as thirty (days). "' (Using translation from Nasāʾī 2117)   

ابن حبّان:٣٤٥٧أَخْبَرَنَا عَبْدُ اللَّهِ بْنُ مُحَمَّدٍ الْأَزْدِيُّ قَالَ حَدَّثَنَا إِسْحَاقُ بْنُ إِبْرَاهِيمَ قَالَ حَدَّثَنَا عَبْدُ الرَّزَّاقِ قَالَ أَخْبَرَنَا مَعْمَرٌ عَنِ الزُّهْرِيِّ عَنْ سَعِيدِ بْنِ الْمُسَيِّبِ وَأَبِي سَلَمَةَ أَوْ أَحَدِهِمَا شَكَّ إِسْحَاقُ عَنْ أَبِي هُرَيْرَةَ

عَنْ رَسُولِ اللَّهِ ﷺ قَالَ «صُومُوا لِرُؤْيَتِهِ وَأَفْطِرُوا لِرُؤْيَتِهِ فَإِنْ غُمَّ عَلَيْكُمْ فَصُومُوا ثَلَاثِينَ»