त्रिविधं नरकस्येदं द्वारं नाशनमात्मनः।कामः क्रोधस्तथा लोभस्तस्मादेतत्त्रयं त्यजेत्॥
tri-vidhaṃ narakasyedaṃ dvāraṃ nāśanam ātmanaḥkāmaḥ krodhas tathā lobhas tasmād etat trayaṃ tyajet
Word by word
The verse says
Three gates open on that ruin, and they destroy a person: wanting, anger, greed. So let a person let go of all three.
In plain words
After fifteen verses of description, something simple.
Three doors. Kāma - wanting. Krodha - anger. Lobha - greed, which is wanting that has learned to hold on.
That is the whole mechanism. Everything in this chapter comes in through one of those three, which means it can be watched at three places instead of a hundred.
Where you've felt this · in relationships
You are three sentences into a reply you are going to regret when you notice your jaw has gone tight. You have felt that exact tightness before and you know what usually follows it. You send the message anyway. The interesting part is not the regret the next morning. It is that there was a moment, quite early, when you could feel clearly which door you were standing in.
Going deeper
Three named doors is the most practical thing in this chapter, and the number is the point.
Kāma is wanting. Krodha is anger. Lobha is greed, which is wanting that has turned into holding. Everything described across the last fifteen verses comes in through one of these, which means a condition that looked enormous has exactly three entrances.
They are also easier to feel than to think about. Each has a physical signature you already know: the lean forward, the heat in the face, the tightening of the hands around something. You do not need to analyse your character. You need to recognise three sensations.
And they come with warning, which is the useful part. Nobody arrives at the far end of this chapter by surprise. There is always a doorway, and there are always a few seconds spent standing in it.