Caitanya-caritāmṛta 11.48
Blended reading (Sanskrit + English inline)
A devotee with Mahārāja Pratāparudra’s determination will certainly be victorious in advancing in Kṛṣṇa consciousness. Śrī Kṛṣṇa confirms this in the Bhagavad-gītā (9.14): satataṁ kīrtayanto māṁ yatantaś ca dṛḍha-vratāḥnamasyantaś ca māṁ bhaktyā nitya-yuktā upāsate “Always chanting My glories, endeavoring with great determination, bowing down before Me, these great souls perpetually worship Me with devotion.” These are the symptoms of a mahātmā engaged in the Lord’s service in full Kṛṣṇa consciousness. Thus Mahārāja Pratāparudra’s determination is very much exalted and is called dṛḍha-vrata. Because of this determination, he was finally able to receive Lord Caitanya’s direct mercy.
My note
Source: vedabase.io