Srimad-Bhagavatam: Canto 8 - Chapter 1 - Verse 13
Sanskrit:
तस्मादस्य वधो धर्मो भर्तु: शुश्रूषणं च न: ।इत्यायुधानि जगृहुर्बलेरनुचरासुरा: ॥ १३ ॥
ITRANS:
tasmād asya vadho dharmobhartuḥ śuśrūṣaṇaṁ ca naḥity āyudhāni jagṛhurbaler anucarāsurāḥ
Translation:
“Therefore it is our duty to kill this Vāmanadeva, Lord Viṣṇu. It is our religious principle and the way to serve our master.” After making this decision, the demoniac followers of Mahārāja Bali took up their various weapons with a view to killing Vāmanadeva.