caitanya-gosanira ninda sunila yaha haite
tare vadha kaile haya papa-prayascitte
caitanya-gosanira—of Sri Caitanya Mahaprabhu; ninda—blasphemy; sunila—I have heard; yaha haite—from whom; tare vadha kaile—if he is killed; haya—there is; papa-prayascitte—atonement for the sinful act.
yo hi bhagavatam lokam
karoti tasya nasyanti
nindam kurvanti ye mudha
patanti pitrbhih sardham
hanti nindati vai dvesti
krudhyate yati no harsam
darsane patanani sat
In this conversation between Markandeya and Bhagiratha, it is said: "My dear King, if one derides an exalted devotee, he loses the results of his pious activities, his opulence, his reputation and his sons. Vaisnavas are all great souls. Whoever blasphemes them falls down to the hell known as Maharaurava. He is also accompanied by his forefathers. Whoever kills or blasphemes a Vaisnava and whoever is envious of a Vaisnava or angry with him, or whoever does not offer him obeisances or feel joy upon seeing a Vaisnava, certainly falls into a hellish condition."
kara-patrais ca phalyante
nindam kurvanti ye papa
ye nindanti hrsikesam
tesam nasyati niscitam
te pacyante maha-ghore
na pasyet purusadhaman
taih sardham vancaka-janaih
saha-vasam na karayet
"One who criticizes Lord Visnu and His devotees loses all the benefits accrued in a hundred pious births. Such a person rots in the Kumbhipaka 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 Visnu and His devotees. Never try to associate with such persons."
nindam bhagavatah srnvan
tat-parasya janasya va
tato napaiti yah so 'pi
yaty adhah sukrtac cyutah
karnau pidhaya nirayad yad akalpa ise
dharmavitary asrnibhir nrbhir asyamane
chindyat prasahya rusatim asatim prabhus cej
jihvam asun api tato visrjet sa dharmah
"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."
Link to this page: https://prabhupadabooks.com/cc/madhya/15/261