سُنَنُ النَّسَائِيِّ
Sunan an-Nasa’i 763
The Book of the Qiblah
Prayer in a single garment
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?"
Sunan an-Nasa'i, 763Sahih (Darussalam)