It is narrated from Sayyiduna Abdullah bin Abbas (may Allah be pleased with them both) that the Messenger of Allah (peace and blessings be upon him) said: "Beware of a house that is called 'al-hammam' (the public bathhouse)." The Companions said: O Messenger of Allah, it removes dirt and benefits the sick. He (peace and blessings be upon him) said: "Then whoever enters it, let him cover himself (his private parts)." This hadith is sahih (authentic) on the condition of Muslim.