Imam al-Sadiq (AS) said, 'I only like to see the young man from among you occupied in either of two states: learning or teaching, for if he does not [engage in either of these two], he is wasting his time; and by wasting his time, he will lose out; and by losing out, he will be committing a sin; and by committing a sin, he will dwell in the Fire, by the One who sent Muhammad with the truth.