Imam Hassan Askari (as) and fear of Allah (SWT) in His childhood:

The Ahlul Bayt (as)who carries the most wisdom and knowledge of the
seen and unseen are they who most fear Allah (SWT) and pass their
every second in life reflecting and pondering about the most important
subjects.
It is written by the scholars that once our 11th Imam, Imam Hassan
Askari (as) who was still a child was standing between some other
children who were playing and having fun. Suddenly a lover of the
Ahlul Bayt (as) was passing by. But he was trapped with this scene
that all the children were playing but a beautiful child was standing
alone crying. He decided to approach this child to ask what was wrong,
maybe he could help him. He said: "My dear, are you crying because you
don't have the toys other children have. If you like I can bring some
toys to you." Imam Hassan Askari (as) replied: "Do you think I'm
crying for the toys. We are not created to play with toys and have fun
but to worship Allah (SWT) and seek for knowledge. This lover of the
Ahlul Bayt (as) asked him that how he was sure about that and the
young Imam Hassan Askari (as) answered: Have you not read the verse of
the Noble Qur'an which guides us saying:
"What! Did you then think that We had created you in vain and that you
shall not be returned to Us?" (Noble Qur'an 23:115)
This lover of the Ahlul Bayt (as) was impressed with the answer and
said: "But why are you so troubled in such a young age. You have not
committed any sins. Imam Hassan Askari (as) replied: "Age does not
matter. I watch my mother every day when she set fire to the large
twigs she uses the small first. I am afraid that may not the young
children of this world be used to light the fire of Hell." Allahu
Akbar, the Holy Imam Hassan Askari (as) who is an infallible
personality and a Hujjat of Allah (SWT) reflects so deeply, this
answer was only a lesson to His followers to ponder over. This
capturing story of Imam Hassan Askari (as) is a great learning lesson
for us all.