Srimad-Bhagavatam: Canto 9 - Chapter 1 - Verse 5
Sanskrit:
यदा स देवगुरुणा याचितोऽभीक्ष्णशो मदात् ।नात्यजत् तत्कृते जज्ञे सुरदानवविग्रह: ॥ ५ ॥
ITRANS:
yadā sa deva-guruṇāyācito ’bhīkṣṇaśo madātnātyajat tat-kṛte jajñesura-dānava-vigrahaḥ
Translation:
Although requested again and again by Bṛhaspati, the spiritual master of the demigods, Soma did not return Tārā. This was due to his false pride. Consequently, a fight ensued between the demigods and the demons.