Is it permissible to pray Fajr at ten o’clock in the morning due to exhaustion and sleep after finishing work at night?

One must strive to wake up for Fajr prayer at its appointed time. Delaying the prayer beyond its time is a sign of hypocrisy, especially for Fajr and Isha. If one makes the effort but does not wake up, then they must make up the prayer upon waking.