Ajamila and the Name of God — Bhagavata Purana

A fallen man calls out his son's name — Narayana — at death, and is liberated from lifetimes of accumulated karma.

Ajamila had once been a righteous man who fell into vice. At the hour of his death, terrified, he called out to his youngest son, whose name happened to be Narayana — one of the names of the Divine. The messengers of Yama, come to drag his soul away for judgment, were stopped by the messengers of Vishnu, who declared: the name was uttered, and the name is enough. Ajamila was given more time. He used it well.