If we want to know about mahabhava, we must first understand about saranagati (surrender).
About the six limbs of saranagati.
Bhakti is deep attachment to the Lord.
All our efforts should be for the pleasure of Krsna. This is the definition of bhakti – verse: anyābhilāṣitā-śūnyaṁ jñāna-karmādy-anāvṛtam (Bhakti-rasāmṛta-sindhu 1.1.11).
Hearing Harikatha from the sadhu’s lotus mouth corresponds to associating directly with the sadhu.
The sadhu’s Harikatha is very powerful because it is sabda-brahma (transcendental vibration). It enters through our ears and goes to the heart, cleansing everything that is unwanted.
The sadhu is always absorbed in krsna-nama/krsna-katha.
The Srimad-Bhagavatam is like a ripe fruit that falls through our Guru Parampara.
