I saw Jabir bin `Abdullah praying in a single garment and he said that he had seen the Prophet (ﷺ) praying in a single garment.
Sahih al-Bukhari Book 8, Hadith 5
← Previous Hadith Once Jabir prayed with his Izar tied to his back while his clothes were Lying beside him on a wooden peg. Somebody asked him, "Do you offer your prayer in a single Izar?" He replied, "I did so to show it to a fool like you. Had anyone of us two garments in the lifetime of the Prophet?"

Sahih al-Bukhari Book 8, Hadith 4 Next Hadith → The Prophet (ﷺ) prayed in one garment and crossed its ends.

Sahih al-Bukhari Book 8, Hadith 6