After hearing the conversation between Narada and Yudhisthira (in SB 7.15), if one still has any doubts about Krsna's being the Supreme Personality of Godhead, one should immediately give them up

Expressions researched:
"After hearing the conversation between Nārada and Yudhiṣṭhira, if one still has any doubts about Kṛṣṇa's being the Supreme Personality of Godhead, one should immediately give them up"

Srimad-Bhagavatam

SB Canto 7

After hearing the conversation between Nārada and Yudhiṣṭhira, if one still has any doubts about Kṛṣṇa's being the Supreme Personality of Godhead, one should immediately give them up. Asaṁśayaṁ samagram. Without any doubt and without any defect, one should understand Kṛṣṇa to be the Supreme Personality of Godhead and thus surrender at His lotus feet. Ordinary persons do not do this, even after hearing all the Vedas, but if one is fortunate, although it may be even after many, many births, he comes to this conclusion (bahūnāṁ janmanām ante jñānavān māṁ prapadyate (BG 7.19)).

SB 7.15.79, Translation and Purport

Nārada Muni, being worshiped by Kṛṣṇa and Mahārāja Yudhiṣṭhira, bade them farewell and went away. Yudhiṣṭhira Mahārāja, having heard that Kṛṣṇa, his cousin, is the Supreme Personality of Godhead, was struck with wonder.

After hearing the conversation between Nārada and Yudhiṣṭhira, if one still has any doubts about Kṛṣṇa's being the Supreme Personality of Godhead, one should immediately give them up. Asaṁśayaṁ samagram. Without any doubt and without any defect, one should understand Kṛṣṇa to be the Supreme Personality of Godhead and thus surrender at His lotus feet. Ordinary persons do not do this, even after hearing all the Vedas, but if one is fortunate, although it may be even after many, many births, he comes to this conclusion (bahūnāṁ janmanām ante jñānavān māṁ prapadyate (BG 7.19)).