When does maghrib and isha prayer become qaza? and when should they be prayed when missed
Maghrib’s time is until the Isha athan. There is difference regarding when the time for Isha ends. The four schools recommend that it should be prayed in the first third of the night (with “night” defined as the time between the isha athan and the fajr athan), but that the prayer is not missed as long as it is prayed before the fajr athan, while others (like Ibn Baaz) say that it is sinful to delay it beyond the middle of the night.
A missed prayer should be performed as soon as one is able, it is considered highly sinful to delay performing a missed prayer when one is able to do it.