Sri Maitreya said: My dear Vidura, when Dhruva Maharaja heard the encouraging words of the great sages, he performed the acamana by touching water and then took up his arrow made by Lord Narayana and fixed it upon his bow

Expressions researched:
"Sri Maitreya said: My dear Vidura, when Dhruva Maharaja heard the encouraging words of the great sages, he performed the acamana by touching water and then took up his arrow made by Lord Narayana and fixed it upon his bow"

Srimad-Bhagavatam

SB Canto 4

Sri Maitreya said: My dear Vidura, when Dhruva Maharaja heard the encouraging words of the great sages, he performed the acamana by touching water and then took up his arrow made by Lord Narayana and fixed it upon his bow.

SB 4.11.1, Translation and Purport

Sri Maitreya said: My dear Vidura, when Dhruva Maharaja heard the encouraging words of the great sages, he performed the acamana by touching water and then took up his arrow made by Lord Narayana and fixed it upon his bow.

Dhruva Mahārāja was given a specific arrow made by Lord Nārāyaṇa Himself, and he now fixed it upon his bow to finish the illusory atmosphere created by the Yakṣas. As it is stated in the Bhagavad-gītā (BG 7.14), mām eva ye prapadyante māyām etāṁ taranti te. Without Nārāyaṇa, the Supreme Personality of Godhead, no one is able to overcome the action of the illusory energy. Śrī Caitanya Mahāprabhu has also given us a nice weapon for this age, as stated in the Bhāgavatam: sāṅgopāṅgāstra—in this age, the nārāyaṇāstra, or weapon to drive away māyā, is the chanting of the Hare Kṛṣṇa mantra in pursuance of the associates of Lord Caitanya, such as Advaita Prabhu, Nityānanda, Gadādhara and Śrīvāsa.