Combining Two Salah Together (Esha And Maghrib)
Walaikum Assalam, In my opinion it is permissible to join two prayers (except fajr) together (Zuhr+Asr & Maghrib-Isha), if one for whatever reason, is unable to pray that prayer in its own respective time. I would however say that it would be makruh e tahrimi (extremely disliked) to make this a routine, but nonetheless permissible (this was more or less also the opinion of several Maliki scholars).