Perhaps his Lord, if he divorced you [all], would substitute for him wives better than you - submitting [to Allāh], believing, devoutly obedient, repentant, worshipping, and traveling1 - [ones] previously married and virgins.
Translation: Saheeh International (English)
1 Emigrating for the cause of Allāh. Another meaning is "given to fasting."
It is very likely that if His Messenger was to divorce both of you, Allah may He be glorified will give him wives better than you, who are submissive to his instructions, believing in Allah and His Messenger, obedient to Allah, repenting of their sins, devoted to their Lord, fasting; previously married and virgins whom no one except the Messenger has touched. However, he did not divorce them.