ENOfficial
‘Abdallah b. 'Amr reported God’s messenger as saving, "The land of the foreigners will be conquered for you, and you will find in it houses called baths. Men must not enter them without lower garments. Keep women away from them, except those who are ill or in childbed.” Abu Dawud transmitted it.
Source: sunnah.com
Other translations
Arabic
وَعَنْ عَبْدِ اللَّهِ بْنِ عَمْرٍو أَنَّ رَسُولَ اللَّهِ صَلَّى اللَّهُ عَلَيْهِ وَسَلَّمَ قَالَ: " سَتُفْتَحُ لَكُمْ أَرْضُ الْعَجَمِ وَسَتَجِدُونَ فِيهَا بُيُوتًا يُقَالُ لَهَا: الْحَمَّامَاتُ فَلَا يَدْخُلَنَّهَا الرِّجَالُ إِلَّا بِالْأُزُرِ وَامْنَعُوهَا النِّسَاءَ إِلَّا مَرِيضَةً أَوْ نُفَسَاءَ ". رَوَاهُ أَبُو دَاوُد
sunnah.com