Bismillah Walhamdulillah Wassalatu Wassalamu ala Rasulillah,

Assalamu Alaikum Wa Rahmatullahi Wa Barakatu,

It is reported that Imâm Muhammad b. Sîrîn – Allâh have mercy on him – said:

There were people who abandoned knowledge and sitting with the scholars, and [instead] took to their chambers and prayed until their skin dried [from exertion in worship]. Thereafter they began to contradict the Sunnah and thus were destroyed. By Allâh, never does a person act without knowledge, except that he spoils and corrupts more than he fixes and rectifies.

Al-Asbahânî, Al-Targhîb wa Al-Tarhîb 3:98

More:

  1. Won’t you collect your Share?
  2. Ibn Mas’ud on the Companions [with notes on Bid'ah Hasanah]
  3. A Sign of Knowledge and a Sign of Ignorance
  4. Taqwa, Knowledge and Beauty
  5. Two Requirements for Knowledge
  6. Food for Thought, not for Stomachs
  7. Umar b. Abd Al-Aziz on the Way of the Believers

Source: http://www.sayingsofthesalaf.net/index.php/ignorant-piety/#ixzz1VT6R26Ig