Srimad-Bhagavatam: Canto 4 - Chapter 1 - Verse 74
Sanskrit:
तृतीयं चानयन्मासं नवमे नवमेऽहनि ।अब्भक्ष उत्तमश्लोकमुपाधावत्समाधिना ॥ ७४ ॥
ITRANS:
tṛtīyaṁ cānayan māsaṁnavame navame ’haniab-bhakṣa uttamaślokamupādhāvat samādhinā
Translation:
In the third month he drank water only every nine days. Thus he remained completely in trance and worshiped the Supreme Personality of Godhead, who is adored by selected verses.