Srimad-Bhagavatam: Canto 10 - Chapter 1 - Verse 41
Sanskrit:
श्रीराजोवाचब्रह्मन्कालान्तरकृतं तत्कालीनं कथं भवेत् ।यत् कौमारे हरिकृतं जगु: पौगण्डकेऽर्भका: ॥ ४१ ॥
ITRANS:
śrī-rājovācabrahman kālāntara-kṛtaṁtat-kālīnaṁ kathaṁ bhavetyat kaumāre hari-kṛtaṁjaguḥ paugaṇḍake ’rbhakāḥ
Translation:
Mahārāja Parīkṣit inquired: O great sage, how could things done in the past have been described as being done at the present? Lord Śrī Kṛṣṇa performed this pastime of killing Aghāsura during His kaumāra age. How then, during His paugaṇḍa age, could the boys have described this incident as having happened recently?