A sahasranama is a Hindu hymn of praise in which a deity is referred to by 1,000 or more different names.
One major version appears in chapter I.46 of the Ganesha Purana (Gaṇeśa Purāṇa), an important scripture of the Ganapatya (Gāṇapatya).
This version provides an encyclopedic review of Ganesha's attributes and roles as they were understood by the Ganapatya.
A Sanskrit commentary on a subvariant of this version of the Ganesha Sahasranama was written by Bhaskararaya.
[1] Bhaskararaya titles his commentary Khadyota ("Firefly"), making a play on words based on two different meanings of this Sanskrit term.