Regarding sitting party in the sun and party in the shade
باب فِي الْجُلُوسِ بَيْنَ الظِّلِّ وَالشَّمْسِ
Sunan Abu Dawood, Book of General Behavior (Kitab Al-Adab)(view book)
Narrated AbuHurayrah:
AbulQasim ﷺ said: When one of you is in the sun (Shams)--Makhlad's version has "fay'"--and the shadow withdraws from him so that he is partly in sun and partly in shade, he should get up.
حَدَّثَنَا ابْنُ السَّرْحِ، وَمَخْلَدُ بْنُ خَالِدٍ، قَالاَ حَدَّثَنَا سُفْيَانُ، عَنْ مُحَمَّدِ بْنِ الْمُنْكَدِرِ، قَالَ حَدَّثَنِي مَنْ، سَمِعَ أَبَا هُرَيْرَةَ، يَقُولُ قَالَ أَبُو الْقَاسِمِ ﷺ " إِذَا كَانَ أَحَدُكُمْ فِي الشَّمْسِ " . وَقَالَ مَخْلَدٌ " فِي الْفَىْءِ " . " فَقَلَصَ عَنْهُ الظِّلُّ وَصَارَ بَعْضُهُ فِي الشَّمْسِ وَبَعْضُهُ فِي الظِّلِّ فَلْيَقُمْ " .
Classification
Qais quoted his father as saying that he (his father) came when the Messenger of Allah ﷺ was addressing. He stood in the sun. He ordered him (to shift) and he shifted to the shade.
حَدَّثَنَا مُسَدَّدٌ، حَدَّثَنَا يَحْيَى، عَنْ إِسْمَاعِيلَ، قَالَ حَدَّثَنِي قَيْسٌ، عَنْ أَبِيهِ، أَنَّهُ جَاءَ وَرَسُولُ اللَّهِ ﷺ يَخْطُبُ فَقَامَ فِي الشَّمْسِ فَأَمَرَ بِهِ فَحُوِّلَ إِلَى الظِّلِّ .