What is the ruling on rolling up one's garment sleeves during prayer, and is it necessary to lower the rolled-up sleeves before entering the prayer, along with an explanation of the hadith: "I was commanded not to fold a garment during prayer"?

It is disliked to roll up one's garment or to fold up one's sleeve during prayer, based on the hadith: "I was commanded to prostrate on seven bones… and not to fold back clothes or hair." The prohibition indicates dislike, not proscription. Scholars have agreed on the prohibition of praying while one's garment is rolled up or one's hair is tied back. However, if one prays with one's sleeve rolled up, the prayer is valid.