While the terms sekha and asekha occur frequently in the old sutta texts (e.g. A. II, 4: ”sekho ca asekho ca imasmim loke... a^huneyya^” etc.), the term n”eva-sekha-n”a^sekha is perhaps mentioned for the first time in Pug. of the Abh. Canon.
”neither in training nor beyond training”, i.e. neither learner nor master. Thus is called the worldling (puthujjana, q.v.), for he is neither pursuing the 3-fold training (sikkha^ q.v.) in morality, mental culture and wisdom, on the level of the first 3 paths of sanctity, nor has he completed his training as an Arahat. See sekha. - (App.).