(a) It is narrated from the Mother of the Believers, Sayyidah Maymunah (may Allah be pleased with her), that the Messenger of Allah (peace and blessings be upon him) would sometimes pray in a large sheet, part of which was over me and part over him, even when I was menstruating.
(b) A similar hadith is also established from Sayyidah Aishah (may Allah be pleased with her).
(c) In this hadith there is evidence that praying in a single garment is permissible, even if no part of that garment is on the person's shoulders.
Hadith Referenceالسنن الكبرى للبيهقي / كتاب الصلاة / 3290