His Prana never departs. Your highest duty is to prepare for a peaceful life hereafter. Conquer the fear of death. Conquest of the fear of death, conquest of death, is the highest utility of all spiritual Sadhana . The one aim of all Yoga Sadhana is to meet death fearlessly and joyfully.
Man is afraid of death.
In old age, he tries to think of God. If he remembers God even from his boyhood, he will reap a rich spiritual harvest in old age. Bhishma had death at his command. Savitri brought back Satyavan, her husband, to life through her power of chastity. Markandeya conquered death through worship of Lord Siva.