Srimad Bhagavatham : 6.3.35.
itihasam imam guhyam bhagavan kumbha-sambhavah,
kathayam asa malaya asino harim arcayan.
itihasam = history;
imam = this;
guhyam = very confidential;
bhagavan = the most powerful;
kumbha-sambhavah = Agastya Muni, the son of Kumbha;
kathayam asa = explained;
malaye = in the Malaya Hills;
asinah = residing;
harim arcayan = worshiping the Supreme Personality of Godhead.
When the great sage Agastya, the son of Kumbha, was residing in the Malaya Hills and worshiping the Supreme Personality of Godhead, I approached him, and he explained to me this confidential history.