"If the man who blasphemed Śrī Caitanya Mahāprabhu is killed, his sinful action may be atoned."
The Hari-bhakti-vilāsa cites the following quotation from the Skanda Purāṇa concerning the blaspheming of a Vaiṣṇava:
yo hi bhāgavataṁ lokam upahāsaṁ nṛpottama
karoti tasya naśyanti artha-dharma-yaśaḥ-sutāḥ
nindāṁ kurvanti ye mūḍhā vaiṣṇavānāṁ mahātmanām
patanti pitṛbhiḥ sārdhaṁ mahā-raurava-saṁjñite
hanti nindati vai dveṣṭi vaiṣṇavān nābhinandati
krudhyate yāti no harṣaṁ darśane patanāni ṣaṭ
In a conversation between Mārkaṇḍeya and Bhagīratha, it is said, "My dear King, one who derides an exalted devotee loses the results of his pious activities, his opulence, his reputation and his sons. Vaiṣṇavas are all great souls. Whoever blasphemes them falls down to the hell known as Mahāraurava, accompanied by his forefathers. Whoever kills or blasphemes a Vaiṣṇava and whoever is envious of a Vaiṣṇava or angry with him, or whoever does not offer him obeisances or feel joy upon seeing him, certainly falls into a hellish condition."
Also, the Hari-bhakti-vilāsa (10.314) gives the following quotation from the Dvārakā-māhātmya:
kara-patraiś ca phālyante su-tīvrair yama-śāsanaiḥ
nindāṁ kurvanti ye pāpā vaiṣṇavānāṁ mahātmanām
In a conversation between Prahlāda Mahārāja and Bali Mahārāja, it is said, "Those sinful people who blaspheme Vaiṣṇavas, who are all great souls, are subjected very severely to the punishment offered by Yamarāja."
In his Bhakti-sandarbha (313), Jīva Gosvāmī quotes this statement concerning the blaspheming of Lord Viṣṇu:
ye nindanti hṛṣīkeśaṁ tad-bhaktaṁ puṇya-rūpiṇam
śata-janmārjitaṁ puṇyaṁ teṣāṁ naśyati niścitam
te pacyante mahā-ghore kumbhīpāke bhayānake
bhakṣitāḥ kīṭa-saṅghena yāvac candra-divākarau
śrī-viṣṇor avamānanād gurutaraṁ śrī-vaiṣṇavollaṅghanam
tadīya-dūṣaka-janān na paśyet puruṣādhamān
taiḥ sārdhaṁ vañcaka-janaiḥ saha-vāsaṁ na kārayet
""One who criticizes Lord Viṣṇu and His devotees loses all the benefits accrued in a hundred pious births. Such a person rots in the Kumbhīpāka hell and is bitten by worms as long as the sun and moon exist. One should therefore not even see the face of a person who blasphemes Lord Viṣṇu and His devotees. Never try to associate with such persons.""
In his Bhakti-sandarbha (265), Jīva Gosvāmī further quotes from Śrīmad-Bhāgavatam (10.74.40):
nindāṁ bhagavataḥ śṛṇvaṁs tat-parasya janasya vā
tato nāpaiti yaḥ so ’pi yāty adhaḥ sukṛtāc cyutaḥ
“"If one does not immediately leave upon hearing the Lord or the Lord"s devotee blasphemed, he falls down from devotional service.’” Similarly, Lord Śiva's wife Satī states in Śrīmad-Bhāgavatam (4.4.17):
karṇau pidhāya nirayād yad akalpa īśe
dharmāvitary asṛṇibhir nṛbhir asyamāne
chindyāt prasahya ruśatīm asatīṁ prabhuś cej
jihvām asūn api tato visṛjet sa dharmaḥ
“If one hears an irresponsible person blaspheme the master and controller of religion, he should block his ears and go away if unable to punish him. But if one is able to kill, then one should by force cut out the blasphemer's tongue and kill the offender, and after that he should give up his own life.”
(Sri Caitanya Caritamrta-----2:15:261-----purport).

In the Dvārakā-māhātmya the importance of dancing before the Deity is stated by Lord Kṛṣṇa as follows: "A person who is in a jubilant spirit, who feels profound devotional ecstasy while dancing before Me, and who manifests different features of bodily expression can burn away all the accumulated sinful reactions he has stocked up for many, many thousands of years." In the same book there is a statement by Nārada wherein he asserts, "From the body of any person who claps and dances before the Deity, showing manifestations of ecstasy, all the birds of sinful activities fly away upward." Just as by clapping the hands one can cause many birds to fly away, similarly the birds of all sinful activities which are sitting on the body can be made to fly away simply by dancing and clapping before the Deity of Kṛṣṇa.
(Nectar of Devotion).