A person asked Messenger of Allah ﷺ about the offering of the prayer in a single garment. Messenger of Allah ﷺ replied, "Has every one of you got two garments?" (Using translation from Bukhārī 358)
أَنَّ سَائِلًا سَأَلَ رَسُولَ اللهِ ﷺ عَنِ الصَّلَاةِ فِي ثَوْبٍ وَاحِدٍ قَالَ «أَوَلِكُلِّكُمْ ثَوْبَانِ؟»