(5) باب إِذَا صَلَّى فِي الثَّوْبِ الْوَاحِدِ فَلْيَجْعَلْ عَلَى عَاتِقَيْهِ
Narrated Abu Huraira:
The Prophet (ﷺ) said, "None of you should offer prayer in a single garment that does not cover the shoulders."
Reference: Sahih al-Bukhari 359
In-book reference: Book 8, Hadith 11
USC-MSA web (English) reference(deprecated numbering scheme): Vol. 1, Book 8, Hadith 355