Abu Hurairah (May allah be pleased with him) reported:
I saw seventy of the people of the Suffah and none of them had a cloak. They had either a lower garment or a blanket which they suspended from their necks. Some (cloaks) reached halfway down to the legs and some to the ankles; and the man would manage to keep it in his hand to avoid exposing his private parts.[Al- Bukhari].
Arabic/English book reference: Book 1, Hadith 469