original_query: What are the earliest known written references of Abhinavagupta and Al-Biruni regarding the Bhagavata Purana?
query: What are the earliest known written references of Abhinavagupta and Al-Biruni regarding the Bhagavata Purana?
answer: Abhinavagupta (950-1016 CE) referenced the Bhagavata Purana in his devotional poem, while Al-Biruni (973-1050 CE) listed the Bhagavata Purana in his list of Puranas, which he stated originated from the Vishnu Purana.