Śrīmad-Bhāgavatam 12.8.15
ఏతత్ పురన్దరో జ్ఞాత్వా సప్తమేఽస్మిన్ కిలాన్తరే ।
తపోవిశఙ్కితో బ్రహ్మన్నారేభే తద్విఘాతనమ్ ॥ ౧౫ ॥
etat purandaro jṣātvā
[etat purandaro jshaatvaa]
saptame ’smin kilāntare
[saptame ’smin kilaantare]
tapo-viśaṅkito brahmann
[tapo-vishankito brahmann]
ārebhe tad-vighātanam
[aarebhe tad-vighaatanam]
Word-for-word
etat
—
this
purandaraḥ
—
Lord Indra
jṣātvā
—
learning
saptame
—
in the seventh
asmin
—
this
kila
—
indeed
antare
—
reign of Manu
tapaḥ
—
of the austerities
viśaṅkitaḥ
—
becoming fearful
brahman
—
O brāhmaṇa Śaunaka
ārebhe
—
he set into motion
tat
—
of that austerity
vighātanam
—
obstruction.
Blended reading (Sanskrit + English inline)
etat purandaro jṣātvā
etat
this
purandaraḥ
Lord Indra
jṣātvā
learning
saptame ’smin kilāntare
saptame
in the seventh
asmin
this
kila
indeed
antare
reign of Manu
tapo-viśaṅkito brahmann
tapaḥ
of the austerities
viśaṅkitaḥ
becoming fearful
brahman
O brāhmaṇa Śaunaka
ārebhe tad-vighātanam
ārebhe
he set into motion
tat
of that austerity
vighātanam
obstruction.
O brāhmaṇa, during the seventh reign of Manu, the current age, Lord Indra came to know of Mārkaṇḍeya’s austerities and became fearful of his growing mystic potency. Thus he tried to impede the sage’s penance.
Gauḍīya Ācāryas
Viśvanātha Cakravartī Ṭhākura
Gauḍīya
Translation
O brāhmaṇa, during the reign of the seventh Manu, the current age, Indra came to know of Mārkaṇḍeya's austerities, and being fearful, he began to obstruct the sage's penance.
Indra became fearful that by his austerity he would take Indra’s post.
My note
Source: vedabase.io