Is it permissible for the wife to sleep while her husband is out late, which leads to both spouses missing the Fajr prayer?

Prayer at its appointed time is the most beloved deed to Allah, and Allah has enjoined it at specific times. If staying up late to wait for the husband causes one to miss Fajr prayer, then there is no sin in sleeping and waking up for the prayer. One can sleep and get some rest, then prepare to wait for the husband, or use an alarm clock, or ask for help from family members to wake up. The most important thing is to advise the husband to preserve Fajr prayer and remind him of its virtues and the punishment for missing it, and that whoever prays the two cool prayers (Fajr and Asr) will enter Paradise, and that Fajr and Isha prayers are heavy upon the hypocrites. The wife should take the necessary measures to perform the prayer at its appointed time; if sleep then overcomes her, there is no sin upon her.