The Kural in life
Living, yet as good as dead.
Valluvar's verdict is severe. Those who, desiring wrong, betray the home of a friend who fully trusts them are — though they still breathe — no different from the dead. The trust is the aggravation: it is the home of someone who never suspected them, and to violate that is to forfeit the real fruits of a life even while the body lives on.
Parimelazhagar: dead because life's fruits are gone.
Parimelazhagar explains the harsh image: the soul does not reach the proper fruits of life — virtue, wealth, and joy — so the betrayer is 'no different from the dead.' And 'a trusting friend' is stressed because the wrong is done precisely under cover of another's confidence. The betrayal of trust is what turns a living person into a walking corpse.
The one betrayal nothing survives.
Many wrongs can be repaired; betraying the trust of someone who let you into their life is rarely one of them. To be welcomed as a friend and to use that welcome against them is to kill, in yourself, the thing that made you worth trusting. Valluvar's 'as good as dead' is exact: such a person may keep walking around, but the friend, the self, and the future they had are already gone.
Betraying a trusting friend's home leaves you, though living, no better than dead.
Valluvar's severe verdict: those who betray the home of a friend who fully trusts them are, though breathing, no different from the dead. Parimelazhagar: the soul misses life's real fruits — virtue, wealth, joy — so the betrayer is a living corpse; and 'a trusting friend' is stressed because the wrong abuses another's confidence.
Treat a trust given to you as something you can never betray.
When someone lets you into their life and home, that trust is sacred — to use it against them is the one betrayal little survives. Be most careful exactly where you are most trusted; to abuse a welcome is to kill, in yourself, the thing that made you worth trusting. Guard the trust as you would your own life — by this verse, it is your life.