*Bhaktmāl - literally means the garland of devotees, composed during CE 1585-1623 by Śrī Nābhādāsa (CE 1531-1631), the disciple of one of the most renowned Vaiṣṇava-Saint Śrī Agradevāchārya (CE 1497-1601), belonging to the great Śrī Rāmānanda-Sampradāya. Śrī Nābhādāsa was born on Māgha-Shukla-Pañcamī (on the fifth day of the bright half of the Māgha Month) in the Year CE 1531 in a Mahārāṣhtrian Brāhmiṇa family.
Śrī Priyādās of Śrī Chaitanya (Gaudiya-)Sampradāya wrote his most famous commentary 'Bhakti-rasa-bodhinī' on the 'Bhaktmāl' by CE 1712. In the beginning in his 'Bhakti-ras-bodhinī' commentary, Śrī Priyādās mentions - one day He was meditating upon Śrī Chaitanya-Mahāprabhu, then in his meditation, Śrī Nābhādās appeared and inspired him to write a commentary on Bhaktmāl. (Śrī Priyādās was not contemporary to Śrī Nābhādās, they belonged to different times, therefore Śrī Priyādās must have heard the divine glory of Śrī Nābhādās from the saints of Vṛndāvana.)
In the introduction of Śrī Nābhādās, Śrī Priyādāsa writes Śrī Nābhādās was born (had birth) in the illustrious Hanumān-Vansha (People are perplexed with the name 'Hanumān-Vansha', हनुमान-वंश में ही जनम प्रशंस जाको - Śrī Priyādāsa here indicates Śrī Nābhādās had spiritual-birth in the illustrious Śrī Rāmānanda-Sampradāya [Śrī-Sampradāya] in which the first āchārya Śrī Sītā gave mantra to Śrī Hanumān in the guru-Paramparā. Some commentators say He was born in the illustrious Hanumān-Vansha of Mahārāṣhtrian Brāhmiṇ caste.) He appeared without eyes, a blind since birth (भयो दृगहीन सो नवीन बात धारिये). When He became 5 Years old, there occured a great famine in Mahārāṣhtra, which forced his parents to abandon the blind-child in forest. The blind-child was left without any shelter. One day, Śrī Agradevāchārya (Agradās, CE 1497-1601) and his elder guru-brother Śrī Kīladevāchārya (Kīlhadāsa, CE 1459 - 1560), the two very accomplished sages and the disciples of Śrī Kṛṣṇadās Payahārī, were passing by that forest, Śrī Nābhādās was found by them in the forest at the age of 5 Years.
Śrī Kīlhadās asked - Child! Who are You?
The Child said - Mahārāj! I don't know who I am !
Śrī Kīlhadās asked - What is your name?
The Child said - ātmā has no name, which name should I say?
Śrī Kīlhadās asked - Who are your parents?
The Child said - The one who is father and mother of all, He is my parents.
Śrī Kīlhadās further asked - from where have you come here? The Child said - I have come from the same, from where all Jivas come. Only my Karma has brought me here in this situation. (Actually one gets birth as per his own Karmas.)
Such deep spiritual replies from just a 5 years old child amazed them. They immediately knew this is some extraordinary child, who has taken birth to do some divine work. Therefore, Śrī Kīlhadāsa took some water from his Kamaṇdalu and sprinkled it over the child, and to all amazement, The blind-child got eyesight. The first time He opened eyes in the world, and whom he saw first in this world from his eyes were the two saints, Śrī Kīlhadāsa (Śrī Kīladevāchārya) and (his Gurudeva) Śrī Agradāsa (Śrī Agradevāchārya), therefore Śrī Nābhādās got a great devotion in the lotus feet of all the saints devoted to Bhagavān. After opening his eyes and seeing those two saints before him, the child fell down into their lotus feet and started crying. They gave Prasādam to the child and brought him to their hermitage Gālavāshrama (in present day the greatly renowned Galtā-peeth), which was once the hermitage of ancient Gālava Muni. Śrī Kīlhadāsa requested his younger guru-brother, Śrī Agradevāchārya to shower his grace over the child, take him in his care and give him Śrī Rāma-Mantrarāj.
Śrī Agradevāchārya was an accomplished sage, who used to worship Bhagavān Śrī Śrī SītāRāma in the Sakhī-Bhāva (in Mādhuryopāsanā). He gave Śrī Rāma-mantrarāj Deekshā to the child, a Vaiṣṇava name 'Śrī Nārāyaṇa-dāsa, therefore Śrī Nābhādās became a great devotee of saints and devotees. In the Gālavāshrama, the child became engaged in the devotional-services of Bhagavān Śrī Śrī SītāRām, his Gurudeva Śrī Agradevāchārya, and all incoming saints. They all became pleased with faithful Kaiṅkaryam (devotional-service) performed devoutly by Śrī Nābhādās Ji. His Bhakti in the lotus feet of Bhakt and Bhagavān gave him divine-sight.
(Priyādāsa narrates the story of how Śrī Nābhādāsa got divine-sight and order to compose Bhaktmāl -) Śrī Agradās was always engaged in the devotional service of Bhagavān. Once Śrī Agradāsa was doing Mānasī-seva (devotional-services in meditation) of Priyā-Priyatam Bhagavān Śrī SītāRāma with his Bhāva-deha; and Śrī Nābhādāsa was engaged in the devotional-service of fanning his Gurudeva. That time, a disciple of Śrī Agradāsa was travelling through sea, his ship was caught into the violent storms in sea, and the disciple in danger immediately remembered the lotus feet of his gurudeva Śrī Agradāsa Ji. As soon as He remembered, It caused a pause (disturbance) in the divine Mānasī-seva of Priyā-Priyatam by Śrī Agradāsa. Śrī Nābhādās immediately knew everything, and therefore to let his Gurudeva continue his Mānasī-seva of Priyā-Priyatam without any pause, Śrī Nābhādās used the force of the air of his fan to make that ship safely come out of that storm, and Śrī Nābhādās said to his Gurudeva in meditation, Guru please continue to serve Priyā-Priyatam SītāRāma again as that Ship has safely come out the danger. Guru opened his eyes and asked - Who did say it? Śrī Nābhādāsa bowed into the lotus feet of his gurudeva and answered - Dear Guru ji, It is me, Your servant Whom you have nurtured by feeding him Prasād.
It was a pleasant surprise to his gurudeva, Śrī Agradevāchārya. He thought in his mind that now Nābhādāsa has become an accomplished sage and reached to such a position that just while sitting here, he could see and know everything happening in the distant sea. He became very happy, knowing his disciple Nābhādāsa has got the divya-dṛṣṭi (divine sight) from the Seva-Bhakti and Prasāda of Saints. As Nābhādāsa could know all the matter what's going inside the mind of his Gurudeva, therefore since then He became renowned as Nābhā who could see unknown and hidden things in the navel (Nābhi).
Śrī Agradevāchārya said to Nābhādāsa "Son! You have got the divine sight from the mercy of saints, therefore now You should sing the glory of Bhaktas, their stories, and the divine-Bhāvas of their heart."
Śrī Nābhādāsa said to his gurudeva "Guru ! I can sing the glories of Bhagavān Śrī Rāma-Śrī Kṛṣṇa, but It is very difficult to fathom the life-stories of Bhakts, as those are very mysterious."
Then Śrī Agradevāchārya said "Bhagavān who showed you everything happening in the distant sea, He will enter in your heart and reveal all divine-stories of his devotees. You can see their life-story."
This way Śrī Priyādāsa narrated where and how Nābhādāsa received the inspiration to compose Bhaktmāla, the divine glories of the devotees of Bhagavān.