It is narrated from Sayyiduna Abu Juhayfah (may Allah be pleased with him) that the Prophet (peace and blessings be upon him) passed by a man who was praying with his garment hanging loose (sadl), and he (peace and blessings be upon him) cut it off him.
Hadith Referenceالمعجم الكبير للطبراني / باب الواو / 18503