The Prophet (sallal-laahu-alayhi-wasallam) said, ”Three things destroy, the greed that is obeyed, the desires that are followed and a person being amazed with his own opinion”. [Silsilah Al-hadeeth as-saheehah: Number: 1802: 4/412-416]

Shaikh Raslaan (may Allaah preserve him) said: This (i.e. these three affairs) are never in harmony with a (person’s) complete return to the command of the Prophet (sallal-laahu-alayhi-wasallam). The Shaikh also said: Indeed the great religion of Islaam is founded upon knowledge and not ignorance; but when a person is amazed with himself and his opinion, and when splitting occurs in the Ummah in the big affairs of knowledge and every foolish one formulates his own independent judgment, there comes about an uncontrollable chaos and it then proceeds upon a path that has no halter, and becomes an affair of trial, corruption, confusion and deviation, and an affair in which truth is confounded with falsehood…[Ash-Shi-aaraat Wahdahaa Laa Takfee: pages: 35 -39. Footnote 1]