Sahih Bukhari

Narrated Ibn `Abbas:The Prophet (ﷺ) said, ""No man should stay with a lady in seclusion except in the presence of a Dhu-Mahram."" A man stood up and said, ""O Allah's Messenger (ﷺ)! My wife has gone out intending to perform the Hajj and I have been enrolled (in the army) for such-and-such campaign."" The Prophet (ﷺ) said, ""Return and perform the Hajj with your wife