It is narrated from Hazrat Uqbah bin Amir Juhani, he says that the Noble Prophet Muhammad (peace and blessings be upon him) led us in the Maghrib prayer while he was wearing a silk cloak. Then, when he (peace and blessings be upon him) finished his prayer, he removed it with extreme displeasure. Upon this, I submitted, "O Messenger of Allah (peace and blessings be upon him)! You led the prayer just now, and it was upon you." He (peace and blessings be upon him) replied: "Indeed, it is not appropriate for the righteous."