One verse

Srimad Bhagavatam 10.78.38

10.78.38

ऋषय ऊचु: इल्वलस्य सुतो घोरो बल्वलो नाम दानव: । स दूषयति न: सत्रमेत्य पर्वणि पर्वणि ॥ ३८ ॥

ṛṣaya ūcuḥ ilvalasya suto ghoro balvalo nāma dānavaḥ sa dūṣayati naḥ satram etya parvaṇi parvaṇi

ṛṣayaḥ ūcuḥ
the sages said
ilvalasya
of Ilvala
sutaḥ
the son
ghoraḥ
fearsome
balvalaḥ nāma
named Balvala
dānavaḥ
demon
saḥ
he
dūṣayati
contaminates
naḥ
our
satram
sacrifice
etya
coming
parvaṇi parvaṇi
on each new-moon day

The sages said: A fearsome demon named Balvala, the son of Ilvala, comes here every new-moon day and contaminates our sacrifice.