Explanation: Overcome by remorse at the misery of people, he left his palace in the dead of night in search of eternal truth.

• He rode in his chariot pulled by his favorite horse Kanthaka and driven by his charioteer Channa far away from the city.
• He cut his hair and sent it along with his discarded garments and jewellery to his father. This is known as Mahabhiraskramana or the Great Going Forth.
• After 49 days of meditation, he attained enlightenment, at the age of 35. Thereafter, he came to be called Buddha or the Enlightened.
• He then delivered his first sermon in a deer park in Sarnath near Varanasi. This event is described as Dharmachakra-parivartana or ‘wheel of the great law’.
• At the age of 80, he passed away in Kusinagara. This is known as Parinirvana.

Source: Tamil Nadu NCERT