It is narrated from Sayyiduna Abdullah bin Amr (may Allah be pleased with them both) that the Messenger of Allah (peace and blessings be upon him) said: "After me, the land of the non-Arabs will be conquered for you, and in it there will be houses called bathhouses (hammams). Beware! They are forbidden to men except with waist-wrappers, and they are also forbidden to the women of my Ummah except for a woman in postnatal bleeding or one who is sick."
Hadith Referenceالمعجم الكبير للطبراني / باب العين / 13725