He (Narada Muni) initiated even Vyasadeva, the author of the Vedic literatures, and from Vyasadeva, Madhvacarya was initiated, and thus the Madhva-sampradaya, in which the Gaudiya-sampradaya is also included, has spread all over the universe

Expressions researched:
"He (Nārada Muni) initiated even Vyasadeva, the author of the Vedic literatures, and from Vyasadeva, Madhvacarya was initiated, and thus the Madhva-sampradaya, in which the Gaudiya-sampradaya is also included, has spread all over the universe"

SB Canto 1

He is the son and disciple of Brahmājī, and from him the disciplic succession in the line of Brahmā has been spread. He initiated Prahlāda Mahārāja, Dhruva Mahārāja and many celebrated devotees of the Lord. He initiated even Vyāsadeva, the author of the Vedic literatures, and from Vyāsadeva, Madhvācārya was initiated, and thus the Madhva-sampradāya, in which the Gauḍīya-sampradāya is also included, has spread all over the universe.

SB 1.9.6-7, Purport:

Nārada Muni: is inevitably associated with the narrations of the Purāṇas. He is described in the Bhāgavatam. In his previous life he was the son of a maidservant, but by good association with pure devotees he became enlightened in devotional service, and in the next life he became a perfect man comparable with himself only. In the Mahābhārata his name is mentioned in many places. He is the principal devarṣi, or the chief sage amongst the demigods. He is the son and disciple of Brahmājī, and from him the disciplic succession in the line of Brahmā has been spread. He initiated Prahlāda Mahārāja, Dhruva Mahārāja and many celebrated devotees of the Lord. He initiated even Vyāsadeva, the author of the Vedic literatures, and from Vyāsadeva, Madhvācārya was initiated, and thus the Madhva-sampradāya, in which the Gauḍīya-sampradāya is also included, has spread all over the universe. Śrī Caitanya Mahāprabhu belonged to this Madhva-sampradāya; therefore, Brahmājī, Nārada, Vyāsa, down to Madhva, Caitanya and the Gosvāmīs all belonged to the same line of disciplic succession. Nāradajī has instructed many kings from time immemorial. In the Bhāgavatam we can see that he instructed Prahlāda Mahārāja while he was in the womb of his mother, and he instructed Vasudeva, father of Kṛṣṇa, as well as Mahārāja Yudhiṣṭhira.