كتاب الحمَّام
Read the English translation first, with the original Arabic directly underneath.
Narrated Abdullah ibn Amr ibn al-'As:
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.
إِنَّهَا سَتُفْتَحُ لَكُمْ أَرْضُ الْعَجَمِ وَسَتَجِدُونَ فِيهَا بُيُوتًا يُقَالُ لَهَا الْحَمَّامَاتُ فَلاَ يَدْخُلَنَّهَا الرِّجَالُ إِلاَّ بِالأُزُرِ وَامْنَعُوهَا النِّسَاءَ إِلاَّ مَرِيضَةً أَوْ نُفَسَاءَ