Is it permissible to combine the Dhuhr and Asr prayers approximately one hour before the Dhuhr prayer time, and to combine the Maghrib and Isha prayers as a delayed combination due to circumstances in Italy?

Prayer is obligatory at specific times, as Allah Almighty says: "Indeed, prayer has been decreed upon the believers at prescribed times" [An-Nisa: 103].

It is not permissible to perform prayer intentionally before its time, nor is it permissible to combine prayers without a legitimate Shar'i excuse. It is not permissible to pray Dhuhr and Asr before the time of Dhuhr begins, nor Maghrib and Isha before sunset, nor Fajr before dawn breaks.