So these sacrifices means unless they are performed very nicely, according to the rules and regulations as they are mentioned in scripture, they will not produce the desired result. That is the way of sacrifice. Now, here it is said, brahmārpaṇaṁ brahma haviḥ. Now, where is the butter, where is the grain, and where is the qualified brāhmaṇa who can chant the mantras, hymns, very nicely, so that we can get the result? So any kind of sacrifice at the present age is impossible. It is not possible. The only sacrifice—that kīrtana, saṅkīrtana-yajña. That is possible, which you have just now tried. This was introduced, and this is recommended in Bhāgavata. This is authoritative. And when Caitanya Mahāprabhu... Lord Caitanya Mahāprabhu is the incarnation of Kṛṣṇa. That is confirmed in Mahābhārata, Bhāgavata, Purāṇa, Upaniṣad.
Now, in the Bhāgavata in the Eleventh Canto you'll find the symptoms of Caitanya Mahāprabhu in which it is stated that yajñaiḥ saṅkīrtana-prāyair yajanti hi su-medhasaḥ: (SB 11.5.32) "Those who are intelligent persons in this age, in Kali-yuga, they will perform saṅkīrtana-yajña and satisfy Lord Śrī Kṛṣṇa, Lord Caitanya." So this saṅkīrtana-yajña, that which you are performing,
- Hare Kṛṣṇa Hare Kṛṣṇa Kṛṣṇa Kṛṣṇa Hare Hare
- Hare Rāma Hare Rāma Rāma Rāma Hare Hare
(My dear Lord, and the spiritual energy of the Lord, kindly engage me in Your service. I am now embarrassed with this material service. Please engage me in Your service.)