Vajrangaji (Hanuman) attained perfection by rendering service to Lord Ramacandra, and Arjuna attained perfection simply by being Krsna's friend. Bali Maharaja attained perfection by dedicating everything to the lotus feet of Krsna

Expressions researched:
"Vajrāṅgajī [Hanumān] attained perfection by rendering service to Lord Rāmacandra, and Arjuna attained perfection simply by being Kṛṣṇa’s friend. Bali Mahārāja attained perfection by dedicating everything to the lotus feet of Kṛṣṇa"

Sri Caitanya-caritamrta

CC Madhya-lila

The goddess of fortune attained perfection by massaging the transcendental legs of Mahā-Viṣṇu. Mahārāja Pṛthu attained perfection by worshiping the Deity, and Akrūra attained perfection by offering prayers unto the Lord. Vajrāṅgajī [Hanumān] attained perfection by rendering service to Lord Rāmacandra, and Arjuna attained perfection simply by being Kṛṣṇa’s friend. Bali Mahārāja attained perfection by dedicating everything to the lotus feet of Kṛṣṇa.

CC Madhya 22.136, Translation and Purport

Mahārāja Parīkṣit attained the highest perfection, shelter at Lord Kṛṣṇa’s lotus feet, simply by hearing about Lord Viṣṇu. Śukadeva Gosvāmī attained perfection simply by reciting Śrīmad-Bhāgavatam. Prahlāda Mahārāja attained perfection by remembering the Lord. The goddess of fortune attained perfection by massaging the transcendental legs of Mahā-Viṣṇu. Mahārāja Pṛthu attained perfection by worshiping the Deity, and Akrūra attained perfection by offering prayers unto the Lord. Vajrāṅgajī [Hanumān] attained perfection by rendering service to Lord Rāmacandra, and Arjuna attained perfection simply by being Kṛṣṇa’s friend. Bali Mahārāja attained perfection by dedicating everything to the lotus feet of Kṛṣṇa.

This verse appears in the Padyāvalī (53) and the Bhakti-rasāmṛta-sindhu (1.2.265).