The Prophet ﷺ said: After some time the lands of the non-Arabs will be conquered for you, and there you will find houses called hammamat (hot baths). so men should not enter them (to wash) except in lower garments, and forbid the women to enter them except a sick or one who is in a child-bed. (Using translation from Abū Dāʾūd 4011)
قَالَ رَسُولُ اللهِ ﷺ إِنَّهَا سَتُفْتَحُ لَكُمْ أَرْضُ الْأَعَاجِمِ وَسَتَجِدُونَ فِيهَا بُيُوتًا يُقَالُ لَهَا الْحَمَّامَاتُ فَلَا يَدْخُلَنَّهَا الرِّجَالُ إِلَّا بِالْأُزُرِ وَامْنَعُوا النِّسَاءَ أَنْ يَدْخُلْنَهَا إِلَّا مَرِيضَةً أَوْ نُفَسَاءَ