The Upaniṣads / Kaṭha / 5.14 How should I know

5.14

The Kaṭha (कठ)

तदेतदिति मन्यन्तेऽनिर्देश्यं परमं सुखम् ।
कथं नु तद् विजानीयां किमु भाति विभाति वा
tad etad iti manyante 'nirdeśyaṃ paramaṃ sukham |
kathaṃ nu tad vijānīyāṃ kim u bhāti vibhāti vā

The line

This they take to be that: the highest happiness, not to be designated. How, now, should I know it? Does it shine, or does it shine out?

नेपालीमा

यसलाई उनीहरू त्यो ठान्छन्, नाम दिन नसकिने सर्वोच्च सुख। अब म त्यसलाई कसरी जानूँ? के त्यो चम्कन्छ कि चम्काउँछ?

Where it sits

The next mantra answers the question about shining. The sun does not shine there.

Split: tat etat iti manyante (ततेततिति मन्यन्ते) + anirdeśyam (अनिर्देश्यम्) + paramam sukham (परमम् सुखम्) + katham nu (कथम् नु) + tat vijānīyām (तत् विजानीयाम्) + kim u bhāti (किमु भाति) + vibhāti vā (विभाति वा)

Sanskrit, in depth

The words

WordGrammarSense
tat etat iti manyante (ततेततिति मन्यन्ते)they think, that is thisHeard tad etad iti manyante (तदेतदिति मन्यन्ते).
anirdeśyam (अनिर्देश्यम्)accusativeNot to be pointed out. Heard 'nirdeśyam (ऽनिर्देश्यम्).
paramam sukham (परमम् सुखम्)the highest easeHeard paramaṃ sukham (परमं सुखम्).
katham nu (कथम् नु)how, indeedThe question.
tat vijānīyām (तत् विजानीयाम्)might I know thatOptative. Heard tad vijānīyām (तद् विजानीयाम्).
kim u bhāti (किमु भाति)does it shinePresent.
vibhāti vā (विभाति वा)or does it shine forthPresent.

The phrases

They consider that highest ease, which cannot be pointed at. How should I know it? Does it shine, or shine out?

Sanskrit in this line

Manyante anirdeśyam (मन्यन्ते अनिर्देश्यम्) is manyante 'nirdeśyam (मन्यन्तेऽनिर्देश्यम्).

Say it back

Ask the mantra's two questions about light.