عَنْ أَبِي الْبَخْتَرِيِّ قَالَ: أَهْلَلْنَا هِلَالَ رَمَضَانَ وَنَحْنُ بِذَاتِ عِرْقٍ، قَالَ: فَأَرْسَلْنَا رَجُلًا إِلَى ابْنِ عَبَّاسٍ يَسْأَلُهُ فَسَأَلَهُ قَالَ هَاشِمٌ: فَقَالَ ابْنُ عَبَّاسٍ رَضِيَ اللَّهُ عَنْهُمَا: قَالَ رَسُولُ اللَّهِ صَلَّى اللَّهُ عَلَيْهِ وَآلِهِ وَسَلَّمَ: ((إِنَّ اللَّهَ قَدْ مَدَّ رُؤْيَتَهُ، قَالَ: هَاشِمٌ لِرُؤْيَتِهِ، فَإِنْ أُغْمِيَ عَلَيْكُمْ فَأَكْمِلُوا الْعِدَّةَ))
Abu Bakhtari says: We saw the crescent of Ramadan at the place of Dhat 'Irq, then we sent a man to Sayyiduna Abdullah bin Abbas (may Allah be pleased with him) to ask him about it. When he asked: Hashim says, then Sayyiduna Ibn Abbas (may Allah be pleased with him) said that the Messenger of Allah (peace and blessings be upon him) said: Allah Almighty has prolonged its sighting, if there are clouds then complete the counting (of Sha'ban).