Al-Kāfi
Hadith 2932ـ حَمَّادٌ عَنِ الْحَلَبِيِّ عَنْ أَبِي عَبْدِ الله (عَلَيْهِ السَّلاَم) قَالَ كَانَ عَلِيٌّ (عَلَيْهِ السَّلاَم) يَقُولُ لا أُجِيزُ فِي الْهِلالِ إِلاَّ شَهَادَةَ رَجُلَيْنِ عَدْلَيْنِ.
2. Hammad has narrated from al-Halabiy who has said the following: “Abu ‘Abd Allah (a.s.), has said that ’Amir al-Mu’minin (a.s.), would say, ‘I do not accept a testimony about seeing the crescent if it is from less than two just witnesses.’”