Tell me what really is. Do not die before. What really is, tell me. Do not die before.

This verse repeats the structure of verse 18 with a crucial variation: mā mṛthā becomes mā mṛthaḥ, and pūrvam (before) is implicit. Naciketas warns Yama not to “die” before revealing the truth — not just in the sense of withdrawing but of the spiritual opportunity being lost.

The idea that revelation can “die” if not transmitted is profound. Vedic knowledge is śruti (the heard) — it requires living transmission from master to disciple. If the chain breaks, the knowledge effectively “dies” even if it remains in the texts.

The repetition of the previous verse with variation creates an effect of liturgical insistence. Naciketas does not yield; each time Yama tries to evade, he returns with the same demand. This is bhakti (devotion) in its aspect of persistence, śraddhā (faith) as tenacity.

Traditional commentary suggests that Naciketas here reveals his understanding that both he and Yama are subject to the law of death, and only knowledge of the Ātman transcends this law. The urgency is real: without this knowledge, both will “die” in the sense of continuing in the cycle of rebirth.