guilt
Does Hinduism teach that some wrongs are simply unforgivable or beyond expiation?
The idea of great sins
Classical texts on dharma, called Dharmashastra, name a group of acts called mahapatakas, meaning great or heavy sins. These include things like killing a brahmin, stealing, and certain serious betrayals of trust. Below these sit lesser wrongs, called upapataka. The texts treat the mahapatakas as a special category because the harm done is seen as so deep that ordinary acts of expiation, called prayaschitta, may not fully clear them. Some passages suggest that for the very gravest acts, no ritual or act of penance can fully undo what was done.
Where the debate sits
Dharmashastra scholars disagreed with each other on this. Some held that every wrong, however serious, has some form of expiation attached to it, even if the penance is very long or very hard. Others argued that certain acts, especially killing a brahmin, sit in a different class entirely, where full expiation is out of reach in this lifetime. This was never settled into one single answer across the tradition. Different schools and commentators came to different conclusions, and the debate continued for centuries.
Grace as the other answer
A strong counter-current runs through devotional Hinduism. The Bhagavata Purana, among other texts, tells stories of people who committed very serious wrongs and were still reached by divine grace. The idea here is that grace does not work like a ledger. It is not earned by balancing out bad acts with good ones. It can arrive freely, even where karma would seem to leave no room. This strand of the tradition holds that no person is permanently beyond the reach of the divine. Devotion, surrender, and sincere turning toward the divine are seen as capable of cutting through even the heaviest karma.
How people hold both ideas today
Most Hindus today do not live inside the Dharmashastra framework in a direct way. But the tension between the two ideas, that some wrongs carry very heavy consequences and that grace can still reach anyone, stays alive in how people think about guilt, regret, and forgiveness. Many people hold both at once. The seriousness of a wrong is not denied, but neither is the possibility of being changed by it or of finding a way through. Which idea a person leans toward often depends on their tradition, their family background, and their own experience.