Srila Prabhupada

So sāṅgopāṅgāstra-pārṣadam. This is the description of the God, Kṛṣṇa, in this age. That is Caitanya Mahāprabhu. Kṛṣṇa-varṇaṁ tviṣākṛṣṇaṁ sāṅgopāṅgāstra-pārṣadam (SB 11.5.32). And how to worship Him? What is the process? Yajñaiḥ saṅkīrtanaiḥ. That's all. You keep Caitanya Mahāprabhu's Deity and chant and dance—your life is successful. So easy. We are worshiping Rādhā-Kṛṣṇa. That is very difficult. But if we keep Caitanya Mahāprabhu with His associates, this Pañca-tattva, Gaura-Nitāi, Gaura-Gadādhara, or Pañca-tattva, and worship Him according to the śāstra description . . . the śāstra description is yajñaiḥ saṅkīrtanaiḥ. This is yajña. Life is meant for performing yajña. In the Bhagavad-gītā it is said, yajñārthe karma. You are very busy. Yes, you should be busy always, twenty-four hours. For what purpose? Yajñārthe, not for your sense gratification. That is devotional life.
(750310 - Lecture BG 07.02 - London)

Whenever Caitanya Mahāprabhu is present, there are so many devotees. Gaura-bhakta-vṛnda. So sāṅgopāṅgāstra-pārṣadam. This is the incarnation of Kali.
So yajñaiḥ saṅkīrtana-prāyair yajanti hi su-medhasaḥ (SB 11.5.32). Those who have got brain substance, not dull, filled up with cow dung, they cannot understand what is the saṅkīrtana-yajña. But śāstra says, yajñaiḥ saṅkīrtana-prāyair yajanti hi su-medhasaḥ: “Those who have got nice brain substance, they can perform this yajña, saṅkīrtana-yajña.” Then it fulfills the injunction of the Bhagavad-gītā, yajña-dāna-tapaḥ-kriyāḥ (BG 17.24). So for this saṅkīrtana movement, saṅkīrtana-yajña, in this age, before the Deity of Lord Caitanya Mahāprabhu and associated with Nityānanda, Advaita, others . . . if not all, at least Nityānanda or Gadādhara. Gaura-Gadādhara or Gaura-Nityānanda, or all of them, five. Śrī-kṛṣṇa-caitanya prabhu-nityānanda.
(730905 – Lecture Festival Appearance Day, Srimati Radharani, Radhastami – London)