(43) General Behavior (Kitab Al-Adab)
كتاب الأدب
(15) Chapter: Regarding sitting party in the sun and party in the shade
(15) باب فِي الْجُلُوسِ بَيْنَ الظِّلِّ وَالشَّمْسِ
Sunan Abi Dawud 4822 

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 صلى الله عليه وسلم يَخْطُبُ فَقَامَ فِي الشَّمْسِ فَأَمَرَ بِهِ فَحُوِّلَ إِلَى الظِّلِّ ‏.‏
Grade :  Sahih (Al-Albani) صحيح  (الألباني)حكم :
Reference : Sunan Abi Dawud 4822
In-book reference : Book 43, Hadith 50
English translation : Book 42, Hadith 4804