What is "patisambhidamagga"

The Patisambhidamagga (; Pali for "path of discrimination"; sometimes called just Patisambhida for short; abbrevs.: ) is a Buddhist scripture, part of the Pali Canon of Theravada Buddhism. It is included there as the twelfth book of the Sutta Pitaka's Khuddaka Nikaya. Tradition ascribes it to the Buddha's disciple Sariputta. It comprises 30 chapters on different topics, of which the first, on knowledge, makes up about a third of the book.