What do our scriptures say about a person who gets married to a person of another religion?
Is it considered a sin?
If yes, what is the punishment?
What do our scriptures say about a person who gets married to a person of another religion?
Is it considered a sin?
If yes, what is the punishment?
A person who does not believe in the authority of the Vedas is called a Nastika in Hinduism.(as opposed to Astika ,which is the opposite of Nastika)
Now,none of the other religions regard Vedas as their authority.So,from a Hindu's pov, followers of other religions are simply Nastikas.
So,it is sufficient to know how do Hindu Shastras(the Scriptures) treat the Nastikas.
Manu Smriti 11.66.Dhanya Kupya Pasusteyam Madyapa stree Nishevanam Stree Sudra Visa Kshatra Vadho Nastikyam Cha Upapatkam-
Stealing grain, base metals, or cattle, intercourse with women who drink spirituous liquor, slaying women, Sudras, Vaisyas, or Kshatriyas, and atheism, (are all) minor offences, causing loss of caste (Upapataka).
12.33.Lobha swapno adhritihi Krourya Nastikyam Mrittavrittita Yachisnuta Pramadas Cha Tamasm Guna lakshanam
Covetousness, sleepiness, pusillanimity, cruelty, atheism, leading an evil life, a habit of soliciting favours, and inattentiveness, are the marks of the quality of Darkness
Also note that, although Nastika is loosely translated as an Atheist by the translator above, but the correct meaning of Nastika in Hinduism is as given at the beginning only.That's why i also gave the transliterated Sanskrit verses so as to avoid any confusions of that nature.
So,as one can see, being a Nastika is condemned in Scriptures as being a minor sin.So,marrying a nastika will be condemnable act for any Hindu without doubt.
And,in any case,the Scriptures also clearly say that,any doctrines,philosophies (or even religions) that are not based on the Vedas are false .So,obviously followers of such religions are to be avoided.
Manu 12.95. All those traditions (smriti) and those despicable systems of philosophy, which are not based on the Veda, produce no reward after death; for they are declared to be founded on Darkness.
12.96. All those (doctrines), differing from the (Veda), which spring up and (soon) perish, are worthless and false, because they are of modern date.
My conclusion-Although we can not find any direct references of other religions in Hindu Shastras as such,but still that a Hindu marrying a non-hindu is condemnable act is made quite clear from the passages above.