He is feeling loneliness.

My mother always said, 'A well-slept child is a well-kept child,' and encouraged me to go to bed early.

He reads the Qur'an every day.

In this chemical reaction, succinate is produced.

This is a model of a mutetrahedron.

This mutetrahedron has a very unusual shape.

His heart became empty.

His heart felt like emptiness.

He is truly demonstrating talent that surpasses his master, just as the saying 'the student has surpassed his or her teacher' goes.

He was my student, but now he has become so proficient that it can be said 'the student has surpassed his teacher.'