What is the ruling on sleeping before or after the Dhuhr prayer and waking up after midnight, while being keen to perform the prayer in congregation on time?

It is permissible to sleep before the prayer time begins, and also after its time if it is highly probable that one will wake up for it before its time expires. It is forbidden to sleep after the prayer time begins if it is highly probable that one will miss it due to sleep and no means have been taken to wake up. Sleeping after the prayer time begins, with a strong presumption of not waking up, is a grave dereliction and its sin may be greater than adultery and theft. One must hasten to repent and make up all missed prayers. Prayer holds a great status in Islam; it is the first thing a servant will be questioned about, and preserving it involves performing it on time and in congregation at the mosque.