It is narrated from Sayyiduna Ibn Mas'ud (may Allah be pleased with him) that he said: "In this Ummah it is not lawful (during the prescribed punishment) to strip a person naked, to stretch him out, to put a collar on him, or to put him in fetters."
Hadith Referenceالمعجم الكبير للطبراني / باب العين / 9655