SHAFAQNA – When asked, how the belief will find root in the heart? Imam Sadeq (AS) replied: Drop carelessness, your belief will find a root. Wanting too much will send out the belief from the heart . Wanting too much, be it the wealth of this world or position, will dry out the root of the religion and the belief. It is narrated from the Prophet (PBUH) who said: Wanting too much and the belief will never gather in one heart .
 Beharul Anwaar, Vol. 67, page 304.
 Soluke Ashuraei, Manzel Chaharrum by Ayatollah Sheikh Mojtaba Tehrani, Page 125.