Mudgalapurana 4.43.22

4.43.22

gajākhyabījaṃ pravadanti vedāstadeva cihnena ca yoginastvām |
gacchanti tenaiva gajānanastvaṃ gajānanaṃ bhaktiyutā bhajāmaḥ ||

The Vedas speak of the seed-syllable named Gaja, and by that very mark the yogins attain you; / therefore you are Gajānana—endowed with devotion, we worship Gajānana.