Srimad-Bhagavatam: Canto 8 - Chapter 1 - Verse 45
Sanskrit:
ससर्जाथासुरीं मायामन्तर्धानगतोऽसुर: ।तत: प्रादुरभूच्छैल: सुरानीकोपरि प्रभो ॥ ४५ ॥
ITRANS:
sasarjāthāsurīṁ māyāmantardhāna-gato ’suraḥtataḥ prādurabhūc chailaḥsurānīkopari prabho
Translation:
My dear King, Bali Mahārāja then disappeared and resorted to demoniac illusions. A giant mountain, generated from illusion, then appeared above the heads of the demigod soldiers.