أَخْبَرَنَا عُبَيْدُ اللَّهِ بْنُ سَعِيدٍ ، حَدَّثَنَا سُفْيَانُ ، عَنْ عَمْرٍو يَعْنِي ابْنَ دِينَارٍ ، عَنْ مُحَمَّدِ بْنِ جُبَيْرٍ ، عَنْ ابْنِ عَبَّاسٍ رَضِيَ اللهِ عَنْهُمَا، أَنَّهُ عَجِبَ مِمَّنْ يَتَقَدَّمُ الشَّهْرَ ، وَيَقُولُ : قَالَ رَسُولُ اللَّهِ صَلَّى اللَّهُ عَلَيْهِ وَسَلَّمَ :" إِذَا رَأَيْتُمُوهُ، فَصُومُوا، وَإِذَا رَأَيْتُمُوهُ فَأَفْطِرُوا، فَإِنْ غُمَّ عَلَيْكُمْ، فَأَكْمِلُوا الْعِدَّةَ ثَلَاثِينَ يَوْمًا "

Ubayd Allah bin Saeed told us, Sufyan told us, on the authority of Amr, meaning Ibn Dinar, on the authority of Muhammad bin Jubayr, on the authority of Ibn Abbas, may God be pleased with him. On their authority, it is astonishing at those who precede the month, and say: The Messenger of God, may God bless him and grant him peace, said: “If you see him, fast, and when you see him Then break your fast, and if it becomes cloudy for you, then complete the period of thirty days.”