You are the disciple and guest of someone who in his vileness will steal away all your attainments. He is not victorious, how will he make you victorious? He will not give you light, he will make you dark. Since he has no light, how can others receive light through associating with him? Like a blind man who cures eyes: With what will he anoint your eyes other than wool? He has no scent or trace of God, but his claims are greater than those of Seth or Adam. The devil himself is embarrassed to appear before him; he keeps on saying, "We are of the saints and even greater." He steals many of the words of the dervishes, so that people may think he really is someone. In his talks he even cavils at Bayazid; Yazid himself is ashamed of him. He is destitute of the bread and provisions of heaven: Allah SubHanuhu wa Ta'ala has not thrown him a single bone.

[Mathnawi of Jalaluddin Rumi, Book I, Page 76]