عَنِ ابْنِ طَاوُوسٍ عَنْ أَبِيهِ عَنْ أَبِي إِسْرَائِيلَ قَالَ دَخَلَ النَّبِيُّ صَلَّى اللَّهُ عَلَيْهِ وَآلِهِ وَسَلَّمَ الْمَسْجِدَ وَأَبُو إِسْرَائِيلَ يُصَلِّي فَقِيلَ لِلنَّبِيِّ صَلَّى اللَّهُ عَلَيْهِ وَآلِهِ وَسَلَّمَ هُوَ ذَا يَا رَسُولَ اللَّهِ لَا يَقْعُدُ وَلَا يُكَلِّمُ النَّاسَ وَلَا يَسْتَظِلُّ وَهُوَ يُرِيدُ الصِّيَامَ فَقَالَ النَّبِيُّ صَلَّى اللَّهُ عَلَيْهِ وَآلِهِ وَسَلَّمَ لِيَقْعُدْ وَلْيُكَلِّمِ النَّاسَ وَلْيَسْتَظِلَّ وَلْيَصُمْ
It is narrated from Sayyiduna Abu Israil (may Allah be pleased with him) that the Noble Prophet (peace and blessings be upon him) entered the mosque while Abu Israil was praying. Someone informed the Noble Prophet (peace and blessings be upon him), "O Messenger of Allah! This is Abu Israil; he does not sit, does not speak to people, does not come into the shade, and he also intends to fast." The Prophet (peace and blessings be upon him) said: "He should sit down, speak to people, come into the shade, and complete his fast."