And both of them have a hadith from Abu Hurayrah (may Allah be pleased with him): (None of you should pray in a single garment with nothing of it on his shoulders).

The Shaykh : He said: "And both of them have a hadith from Abu Hurayrah (may Allah be pleased with him) that the Prophet (peace and blessings be upon him) said:

None of you should offer Salat (prayer) in a single garment with no part of it on his shoulders.

لا يصلي أحدكم في الثوب الواحد ليس على عاتقه منه شيء

Bulugh al-Maram 2:72

" And in a version using the dual: There is no contradiction in his statement: The meaning of "garment" in the hadith is not the shirt, but rather the garment is whatever a person covers himself with, whether a shirt, a lower garment, a blanket, or something else. And his statement: "Shoulders" refers to the area between the shoulder and the base of the neck. And his statement: "Nothing" is an indefinite noun in a context of negation, which encompasses both a little and a lot. Let us give an example of this: If a person has a rag and wants to pray with it, we say: It must cover [the body]. We say: Do not pray in it unless you have something of it on your shoulder. There is no doubt that this is the perfection of covering, but is this obligatory or is it on the basis of recommendation? The scholars (may Allah have mercy on them) differed on this. Some said: Covering the shoulders is obligatory in the obligatory prayer and the voluntary prayer. Some said: It is obligatory in the obligatory prayer but not in the voluntary prayer. Others said: It is not obligatory, but it is part of the perfection of covering. This is the most correct view, and the hadith of Jabir (may Allah be pleased with him) mentioned earlier indicates this.