One verse

Srimad Bhagavatam 2.5.39

2.5.39

ग्रीवायां जनलोकोऽस्य तपोलोक: स्तनद्वयात् । मूर्धभि: सत्यलोकस्तु ब्रह्मलोक: सनातन: ॥ ३९ ॥

grivayam janaloko ’sya tapolokah stana-dvayat murdhabhih satyalokas tu brahmalokah sanatanah

grivayam
up to the neck
janalokah
the Janaloka planeary system
asya
of Him
tapolokah
the Tapoloka planeary system
stana-dvayat
beginning from the breast
murdhabhih
by the head
satyalokah
the Satyaloka planetary system
tu
but
brahmalokah
the spiritual planes
sanatanah
eternal.

From the forefront of the chest up to the neck of the universal form of the Lord are situated the planeary systems named Janaloka and Tapoloka, whereas Satyaloka, the topmost planeary system, is situated on the head of the form. The spiritual planes, however, are eternal.