One verse

Srimad Bhagavatam 5.16.10

5.16.10

तथैवेलावृतमपरेण पूर्वेण च माल्यवद्गन्धमादनावानीलनिषधायतौ द्विसहस्रं पप्रथतु: केतुमालभद्राश्वयो: सीमानं विदधाते ॥ १० ॥

tathaivelavrtam aparena purvena ca malyavad-gandhamadanav anila-nisadhayatau dvi-sahasram paprathatuh ketumala-bhadrasvayoh simanam vidadhate.

tatha eva
exactly like that
ilavrtam aparena
on the western side of Ilavrta-varsa
purvena ca
and on the eastern side
malyavad-gandha-madanau
the demarcation mountains of Malyavan on the west and Gandhamadana on the east
a-nila-nisadha-ayatau
on the northern side up to the mountain known as Nila and on the southern side up to the mountain known as Nisadha
dvi-sahasram
two thousand yojanas
paprathatuh
they extend
ketumala-bhadrasvayoh
of the two varsas named Ketumala and Bhadrasva
simanam
the border
vidadhate
establish

In the same way, west and east of Ilavrta-varsa are two great mountains named Malyavan and Gandhamadana respectively. These two mountains, which are 2,000 yojanas (16,000 miles) high, extend as far as Nila Mountain in the north and Nisadha in the south. They indicate the borders of Ilavrta-varsa and also the varsas known as Ketumala and Bhadrasva.