योगवासिष्ठः yogavāsiṣṭhaḥ - book-5, chapter-18, verse-37

त्वं चेद्बभूविथ पुरा तथेदानीं भविष्यसि ।
अद्य चेह स्थितोऽसीति ज्ञातवानसि निश्चयम् ॥ ३७ ॥

tvaṃ cedbabhūvitha purā tathedānīṃ bhaviṣyasi ,
adya ceha sthito'sīti jñātavānasi niścayam 37

37. tvam cet babhūvitha purā tathā idānīm bhaviṣyasi
adya ca iha sthitaḥ asi iti jñātavān asi niścayam

37. cet tvam purā babhūvitha tathā idānīm bhaviṣyasi
ca adya iha sthitaḥ asi iti niścayam jñātavān asi

37. If you existed in the past, and similarly you will exist in the future, and you are indeed present here today, then you have certainly understood this truth.

Words meanings summery:

• त्वम् (tvam) - you

• चेत् (cet) - if

• बभूविथ (babhūvitha) - you were, you have been

• पुरा (purā) - formerly, in the past, anciently

• तथा (tathā) - similarly, thus, so

• इदानीम् (idānīm) - now, at present

• भविष्यसि (bhaviṣyasi) - you will be, you will become

• अद्य (adya) - today, now

• च (ca) - and, also

• इह (iha) - here, in this world, in this matter

• स्थितः (sthitaḥ) - standing, situated, existing, being

• असि (asi) - you are

• इति (iti) - marks the preceding clause 'you are present here today' as the object of understanding. (thus, in this manner, marking direct speech/thought)

• ज्ञातवान् (jñātavān) - having known, having understood

• असि (asi) - you are

• निश्चयम् (niścayam) - certainty, conviction, truth, determination

Words meanings and morphology

त्वम् (tvam) - you

(pronoun)

Nominative, singular of yuṣmad

yuṣmad - you

चेत् (cet) - if

(indeclinable)

बभूविथ (babhūvitha) - you were, you have been

(verb)

2nd person , singular, active, perfect (lit) of bhū

Perfect Active

root 'bhū', perfect tense, 2nd person singular, parasmaipada

Root: bhū (class 1)

पुरा (purā) - formerly, in the past, anciently

(indeclinable)

तथा (tathā) - similarly, thus, so

(indeclinable)

इदानीम् (idānīm) - now, at present

(indeclinable)

भविष्यसि (bhaviṣyasi) - you will be, you will become

(verb)

2nd person , singular, active, future (lṛṭ) of bhū

Future Active

root 'bhū', future tense, 2nd person singular, parasmaipada

Root: bhū (class 1)

अद्य (adya) - today, now

(indeclinable)

च (ca) - and, also

(indeclinable)

इह (iha) - here, in this world, in this matter

(indeclinable)

स्थितः (sthitaḥ) - standing, situated, existing, being

(adjective)

Nominative, masculine, singular of sthita

sthita - standing, situated, existing, being

Past Passive Participle

from root 'sthā' (to stand)

Root: sthā (class 1)

Note: Used predicatively with 'asi'.

असि (asi) - you are

(verb)

2nd person , singular, active, present (laṭ) of as

Present Active

root 'as', present tense, 2nd person singular, parasmaipada

Root: as (class 2)

इति (iti) - marks the preceding clause 'you are present here today' as the object of understanding. (thus, in this manner, marking direct speech/thought)

(indeclinable)

ज्ञातवान् (jñātavān) - having known, having understood

(adjective)

Nominative, masculine, singular of jñātavat

jñātavat - having known, understood

Past Active Participle

from root 'jñā' (to know) with suffix '-tavat'

Root: jñā (class 9)

असि (asi) - you are

(verb)

2nd person , singular, active, present (laṭ) of as

Present Active

root 'as', present tense, 2nd person singular, parasmaipada

Root: as (class 2)

निश्चयम् (niścayam) - certainty, conviction, truth, determination

(noun)

Accusative, masculine, singular of niścaya

niścaya - certainty, conviction, determination, truth

from ni-ś-ci (to ascertain)

Prefix: nis

Root: ci (class 5)

Note: Used adverbially here, "with certainty".