Claim: Narasimha Purana, one of the Upapuranas, has 68 chapters that include the narratives of the Yama Gita and the ten Avatars of Vishru.
Evidence: Narasimha Purana (Narasiṁha Purāṇa) (Sanskrit:नरसिंह पुराण) is one of the Upapuranas. The recension presented by the printed editions of the text has 68 chapters. The 8th chapter of the text is one of the three versions of the Yama Gītā (other two versions are the Vishnu Purana, Book 3, ch.1-7 and the Agni Purana, Book 3, ch.381). The chapters 36-54 consist the narratives of the ten Avatars of Vishnu.