Imam Abdul Wahab al Sha’arani (Allah have mercy on him) said,
‘The Masters of this path have stated that the signs that a disciple is benefiting from his Shaikh are,
– He keeps a good opinion about all the people except for himself.
– He does not see the deficiencies of others.
-Moreover, he is not perturbed at all by anyone saying bad things about him and considers it to be correct.
Imam adds that it is imperative (wajib) for whoever reads quotes of Sufis like this that demand action to look into their own self.
If he finds himself acting accordingly then he must thank Allah. And if he lacks it then he should repent and strive to incorporate it into his life.’
Lataif al minan, page 44