Srimad-Bhagavatam: Canto 12 - Chapter 1 - Verse 19
Sanskrit:
मन्वन्तरानुकथनं गजेन्द्रस्य विमोक्षणम् ।मन्वन्तरावताराश्च विष्णोर्हयशिरादय: ॥ १९ ॥
ITRANS:
manv-antarānukathanaṁgajendrasya vimokṣaṇammanvantarāvatārāś caviṣṇor hayaśirādayaḥ
Translation:
The reign of each Manu, the liberation of Gajendra, and the special incarnations of Lord Viṣṇu in each manvantara, such as Lord Hayaśīrṣā, are described as well.