The Dighajanu Sutta (Pali Dīghajāṇu sutta), also known as the Byagghapajja Sutta or Vyagghapajja Sutta, is part of the Anguttara Nikaya (AN 8.54). For Theravadin scholars, this discourse of the Pāli Canon is one of several considered key to understanding Buddhist lay ethics. In this discourse, the Buddha instructs a householder named Dīghajāṇu Vyagghapajja, a Koliyan householder, on eight personality traits or conditions that lead to happiness and well-being in this and future lives.