40
Śrīmad-Bhāgavatam
[Canto 9, Ch. 2]
Being unaffected by material conditions, being pleased with whatever was available by the grace of the Lord to maintain body and soul together, and being equal toward everyone, he gave full attention to the Supreme Personality of Godhead, Vāsudeva, who is the transcendental Supersoul, free from material contamination. Thus Prṣadhra, fully satisfied in pure knowledge, always keeping his mind on the Supreme Personality of Godhead, achieved pure devotional service to the Lord and began traveling all over the world, without affection for material activities, as if he were deaf, dumb and blind.
TEXT 14
एवं वृत्तो वनं गत्वा दृष्ट्वा दावाग्निमुत्थितम् । तेनोपयुक्तकरणो ब्रह्म प्राप परं मुनिः ॥१४॥
evam vṛtto vanam gatvā dṛṣṭvā dāvāgnim utthitam tenopayukta-karaṇo brahma prāpa param muniḥ
evam vṛttaḥ—being situated in such an order of life; vanam—to the forest; gatvā—after going; dṛṣṭvā—when he saw; dāva-agnim—a forest fire; utthitam—existing there; tena—by that (fire); upayukta-karaṇaḥ—engaging all the senses of the body by burning; brahma—transcendence; prāpa—he achieved; param—the ultimate goal; muniḥ—as a great saintly person.
TRANSLATION
With this attitude, Prṣadhra became a great saint, and when he entered the forest and saw a blazing forest fire, he took this opportunity to burn his body in the fire. Thus he achieved the transcendental, spiritual world.
PURPORT
The Lord says in  Bhagavad-gītā  (4.9):