The testimony of sighting the crescent moon of Ramadan.
بَابُ الشَّهَادَةِ عَلَى رُؤْيَةِ هِلَالِ رَمَضَانَ
Sunan ad-Darimi, Book of Fasting(view book)
Marwān b. Muḥammad > ʿAbdullāh b. Wahb > Yaḥyá b. Sālim > Abū Bakr b. Nāfiʿ from his father > Ibn ʿUmar
The people looked for the moon, so I informed the Messenger of Allah ﷺ that I had sighted it. He fasted and commanded the people to fast. – Sound Chain
حَدَّثَنَا مَرْوَانُ بْنُ مُحَمَّدٍ عَنْ عَبْدِ اللَّهِ بْنِ وَهْبٍ عَنْ يَحْيَى بْنِ سَالِمٍ عَنْ أَبِي بَكْرِ بْنِ نَافِعٍ عَنْ أَبِيهِ عَنْ ابْنِ عُمَرَ قَالَ
«تَرَاءَى النَّاسُ الْهِلَالَ فَأَخْبَرْتُ رَسُولَ اللَّهِ ﷺ أَنِّي رَأَيْتُهُ فَصَامَ وَأَمَرَ النَّاسَ بِالصِّيَامِ» – إسناده صحيح
Classification
ʿIṣmah b. al-Faḍl
A bedouin came to the Prophet ﷺ and said: I have sighted the moon. Al-Hasan added in his version: that is, of Ramadan. He asked: Do you testify that there is no god but Allah? He replied: Yes. He again asked: Do you testify that Muhammad is the Messenger of Allah? He replied: Yes. and he testified that he had sighted the moon. He said: Bilal, announce to the people that they must fast tomorrow. – Weak Chain
حَدَّثَنِي عِصْمَةُ بْنُ الْفَضْلِ حَدَّثَنَا حُسَيْنٌ الْجُعْفِيُّ عَنْ زَائِدَةَ عَنْ سِمَاكٍ عَنْ عِكْرِمَةَ عَنْ ابْنِ عَبَّاسٍ قَالَ
جَاءَ أَعْرَابِيٌّ إِلَى النَّبِيِّ ﷺ وَقَالَ إِنِّي رَأَيْتُ الْهِلَالَ فَقَالَ «أَتَشْهَدُ أَنْ لَا إِلَهَ إِلَّا اللَّهُ وَأَنِّي رَسُولُ اللَّهِ؟» قَالَ نَعَمْ قَالَ «يَا بِلَالُ نَادِ فِي النَّاسِ فَلْيَصُومُوا غَدًا» – إسناده ضعيف