أَحْمَدُ عَنْ عَلِيِّ بْنِ الْحَكَمِ عَنْ أَبِي أَيُّوبَ الْخَزَّازِ عَنْ مُحَمَّدِ بْنِ مُسْلِمٍ عَنْ أَبِي جَعْفَرٍ ع قَالَ:
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إِذَا رَأَيْتُمُ الْهِلَالَ فَصُومُوا وَ إِذَا رَأَيْتُمُوهُ فَأَفْطِرُوا وَ لَيْسَ بِالرَّأْيِ وَ لَا بِالتَّظَنِّي- وَ لَيْسَ الرُّؤْيَةَ أَنْ يَقُومَ عَشَرَةُ نَفَرٍ فَيَقُولَ وَاحِدٌ هُوَ ذَا وَ يَنْظُرُ تِسْعَةٌ فَلَا يَرَوْنَهُ لَكِنْ إِذَا رَآهُ وَاحِدٌ رَآهُ أَلْفٌ.
Read English translationHide English translationMuhammad Sarwar — attributed by Thaqalayn
6. Ahmad has narrated from Ali ibn al-Hakam from abu Ayyub al-Khazzaz from Muhammad ibn Muslim who has said the following: “Abu Ja’far (a.s.), has said, ‘When you see the crescent, then fast and when you see the crescent (again), then discontinue fasting. It is not by opinions and conjectures. If out of ten people only one says that there is the crescent but the rest cannot see, it is not seeing. If one can see a thousand can also see.’”
Translation: Muhammad Sarwar — attributed by Thaqalayn·The Arabic above is the original.
Hadith gradings
1- صحيحAllamah Baqir al-MajlisiMirʾāt al-ʿUqūl fī Sharḥ Akhbār Āl al-Rasūl (6/229)