Bhagavatapurana 4.9.4

4.9.4

sa taṃ vivakṣantam atad-vidaṃ harir jñātvāsya sarvasya ca hṛdy avasthitaḥ /
kṛtāñjaliṃ brahmamayena kambunā pasparśa bālaṃ kṛpayā kapole //

4. The Lord Hari who is present in every heart perceived that he was eager to utter His praises but incapable (not having words and culture), and out of grace touched with His Śaṅkha the embodiment of Vedas the cheeks of the boy standing with joined hands.