tri-vidham — of three kinds; narakasya — of hell; idam — this; dvāram — gate; nāśanam — destructive; ātmanaḥ — of the self; kāmaḥ — lust; krodhaḥ — anger; tathā — as well as; lobhaḥ — greed; tasmāt — therefore; etat — these; trayam — three; tyajet — one must give up.