And it is tying the two ends of the garment over the shoulder, when the garment is wide enough that its two ends can be tied over the two shoulders, thus covering the ‘awrah, by mentioning a brief report without elaboration.
Sayyiduna Umar bin Abi Salamah (may Allah be pleased with him) narrates that the Messenger of Allah (peace be upon him) prayed wrapped in a cloth in the house of Sayyidah Umm Salamah (may Allah be pleased with her).
Hadith Referenceصحيح ابن خزيمه / جماع أبواب اللباس فى الصلاة / 770