A sub-category of Pratisevanāknśīla Nirhrantha (3):
that ascetic (Muni), who, inspite of being jrnnopajīvī (specifically involved in the process of knowledge), does not observe Jñātiācāra (the conduct qua knowledge) such as following scheduled time for studying scriptures, modesty etc..
jñānadarśanacāritralingānyupajīvan pratiṣevāṇato jñānādikusīlaḥ.
(Sthā 5.187 Vṛ Pa 320)
iha nāṇāikusīlo uvajīvaṃ hoi nāṇapabhiīe.
(Bhaga 25.282 Vṛ)