حَدَّثَنَا مُوسَى بْنُ إِسْمَاعِيلَ، حَدَّثَنَا وُهَيْبٌ، حَدَّثَنَا أَيُّوبُ، عَنْ عِكْرِمَةَ، عَنِ ابْنِ عَبَّاسٍ، قَالَ ‏:‏ بَيْنَمَا النَّبِيُّ صلى الله عليه وسلم يَخْطُبُ إِذَا هُوَ بِرَجُلٍ قَائِمٍ فِي الشَّمْسِ فَسَأَلَ عَنْهُ قَالُوا ‏:‏ هَذَا أَبُو إِسْرَائِيلَ نَذَرَ أَنْ يَقُومَ وَلاَ يَقْعُدَ، وَلاَ يَسْتَظِلَّ وَلاَ يَتَكَلَّمَ وَيَصُومَ ‏.‏ قَالَ ‏:‏ ‏"‏ مُرُوهُ فَلْيَتَكَلَّمْ وَلْيَسْتَظِلَّ وَلْيَقْعُدْ، وَلْيُتِمَّ صَوْمَهُ ‏"

Narrated Ibn 'Abbas

While the Prophet (ﷺ) was delivering the sermon, suddenly he saw a man standing in the sun. He asked about him, and they said: 'This is Abu Isra'il. He has made a vow to stand, not to sit, not to seek shade, not to speak, and to fast.' He said: 'Order him to speak, to seek shade, to sit, and to complete his fast.'