Nissaya: 'foundation'. The 2 wrong foundations of morality are craving tanhā-nissaya and views ditthi-nissaya Hence there are two wrong bases of morality: morality based on craving tanhā-nissita-sīla and morality based on views ditthi-nissita-sīla. App.
'Based on craving' is that kind of morality which has come about by the desire for a happy existence, e.g.: 'O that by this morality I might become a godlike or divine being!' A.IX, 172. 'Based on views' is that morality which has been induced by the view that through the observation of certain moral rules purification may be attained; Vis.M I.
Maha Thera Nyanatiloka. Manual of Buddhist Terms and Doctrines, Buddhist Publication Society, first edition 1952.