Hear from the self-realized vaiṣṇavas

“yāha, bhāgavata paḍa vaiṣṇavera sthāne
ekānta āśraya kara caitanya-caraṇe

(Śrī Caitanya–caritāmṛta Antya 5.131)

“If you want to understand Śrīmad-Bhāgavatam,” he said, “you must approach a self-realized Vaiṣṇava and hear from him. You can do this when you have completely taken shelter of the lotus feet of Śrī Caitanya Mahāprabhu.”

caitanyera bhakta-gaṇera nitya kara ‘saṅga’
tabeta jānibā siddhānta-samudra-taraṅga

(Śrī Caitanya–caritāmṛta Antya 5.132)

Svarūpa Dāmodara continued, “Associate regularly with the devotees of Śrī Caitanya Mahāprabhu, for then only will you understand the waves of the ocean of devotional service.

By doing this, it is possible to understand, otherwise one cannot. What will be the result of doing this?
What is ‘ahaitukī’? What does the sound vibration ‘a’ imply? The sound vibration ‘AUM’ comprises all three – Brahmā, Viṣṇu and Maheśa. The dictionary meaning of the word ‘a’ is Viṣṇu or Śrī Kṛṣṇa. Ahaitukī means Viṣṇu haitukī. In other words, that which is done for Viṣṇu or Śrī Kṛṣṇa, whose one and only hetu (objective) is the pleasure and satisfaction of Śrī Kṛṣṇa or Viṣṇu. This is called ‘ahaitukī bhakti’.
The word ‘causeless’ has no existence anywhere. This is the implied meaning and this is what is approved by the Vaiṣṇavas like Śrīla Kṛṣṇadāsa Kavirāja Gosvāmī and Śrīla Rūpa Gosvāmī, so one has to understand the word ‘ahaitukī’ in this manner.
The only qualification to understand the language of the realm of love is love. Only those who possess love in their hearts will understand, not others. Even in this material world, not everyone can understand the language of love. Though difficult for the ordinary to understand, it is possible for those who possess a loving heart. In the realm of love, ‘Yes’ means ‘No’ and ‘No’ means ‘Yes’. [When Rādhārāṇī tells Kṛṣṇa, “Don’t You dare touch Me!” It actually implies the opposite. “You please touch Me.”]
An Assamese King Gadapani was once attacked by the tyrannical Muslim King Lara Raja. But somehow King Gadapani managed to escape and hide in the forest [other sources claim that he stayed incognito in Vaiṣṇava monasteries]. So they imprisoned his Queen, Jaymati. While in the forest, the King became so emaciated that, coupled with his ragged clothes, nobody could even recognize him. One day a passer-by remarked, “We had perceived the King to be very noble, but he did not turn out like that. He escaped to save himself, leaving the captive Queen in a very pitiable condition. Now no one knows of his whereabouts.” Upon hearing this, the King immediately visited his palace where the Queen was held captive. He told the guards, “I am her spiritual preceptor. Please arrange for me to meet with her.” They duly obliged him. Accompanied by two soldiers, he came in the presence of the Queen, and upon seeing him, she turned her face, dismissing his claims of being her guru. She said, “He is not my guru! Take away this cheat from my vision this very moment.” So the soldiers immediately slapped the King and kicked him away. [Eventually as the Queen refrained from disclosing the whereabouts of the King, she was subjected to continuous inhuman physical torture by the Muslim King, until she passed away fourteen days later.]
With the help of the locals, Gadapani eventually ousted the tyrannical Muslim ruler Lara Raja through a revolt and eventually ascended the throne to restore peace and tranquility in the society. The Queen’s eldest son, who ascended the throne after his father, built a massive tank by the name Jaysagara and a temple of Viṣṇu by the name Jaydal in honour of the memory of his mother. In the state of Assam she became immortalized by the name ‘Sati Jaymati’.
Sati means chaste. Why was she considered chaste? The same woman who turned her face the moment she saw her husband, calling him a cheat and had him kicked out, on whose words her husband was even slapped by the soldiers – why was she glorified as ‘chaste’?
Her real intention was – ‘Although I am unhappy and suffering as a convict of Muslims, I do not want you to remain here even a moment because I will be more unhappy and troubled if the soldiers find out that you are the King and imprison you as well.’
Besides this, the Queen knew that the King was the only one capable of ending the tyranny of the Muslim rulers by creating a revolution. Because the King had a loving relationship with the Queen, he could understand the inner meaning of her words and actions. But the soldiers could not, due to the absence of love. Hence it is not easy to understand the language of love.
Similarly, only the unalloyed devotees of Bhagavān know the intrinsic meaning of the descriptions and narrations about Him given in the scriptures. So if one is desirous of knowing them, they should hear from the unalloyed devotees otherwise one will not be able to understand.