The Book of the Qiblah
9/14. Chapter:
Prayer in a single garment
Sunan an-Nasai
أَخْبَرَنَا قُتَيْبَةُ بْنُ سَعِيدٍ، عَنْ مَالِكٍ، عَنِ ابْنِ شِهَابٍ، عَنْ سَعِيدِ بْنِ الْمُسَيَّبِ، عَنْ أَبِي هُرَيْرَةَ، أَنَّ سَائِلاً، سَأَلَ رَسُولَ اللَّهِ صلى الله عليه وسلم عَنِ الصَّلاَةِ فِي الثَّوْبِ الْوَاحِدِ فَقَالَ " أَوَلِكُلِّكُمْ ثَوْبَانِ " .
It was narrated from Abu Hurairah that someone asked the Messenger of Allah(ﷺ) about praying in a single garment, and he said: "Does everyone of you have two garments?"
Reference : Sunan an-Nasa'i 763In-book reference : Book 9, Hadith 22English translation : Vol. 1, Book 9, Hadith 764