Is it permissible to combine the Maghrib and Isha prayers with the Asr prayer as a jam' taqdim (earlier combination), or to make them up with the Fajr prayer on the following day, due to their times conflicting with nighttime working hours?

Allah has prescribed prayer at specific times, and it is not permissible to offer it early or delay it except for a valid excuse such as travel or illness, as Allah Almighty says: "Indeed, prayer has been decreed upon the believers a book [due at] fixed times." (Quran 4:103). An excuse only permits combining the Dhuhr prayer with Asr, and Maghrib with Isha. Therefore, it is not permissible to delay prayer beyond its prescribed time under the pretext of work. Rather, one must perform the obligatory prayer, otherwise, he should leave the work that prevents him from praying and seek another job.