'mental obduracies', are 5 things which stiffen and hinder the mind from making right exertion, namely:

• doubt about the Master,

• about the Doctrine,

• about the (holy) Brotherhood,

• about the training,

• and anger against one's fellow-monks.

For details s. A.V.206, A.X.14; D.33; M.16. Cf. prec.