عَنْ أَبِي هُرَيْرَةَ رَضِيَ اللَّهُ عَنْهُ عَنِ النَّبِيِّ صَلَّى اللَّهُ عَلَيْهِ وَآلِهِ وَسَلَّمَ قَالَ إِذَا كَانَ أَحَدُكُمْ جَالِسًا فِي الشَّمْسِ فَقَلَصَتْ عَنْهُ فَلْيَتَحَوَّلْ مِنْ مَجْلِسِهِ
Syedna Abu Hurairah (may Allah be pleased with him) narrates that the Messenger of Allah (peace and blessings be upon him) said: When a person is sitting in the sunlight and then the sunlight moves away from him, he should leave that gathering.