So what did you do with that which you knew?
*Please appropriately reference
this quote to: www.fatwa-online.com, thankyou!*
Abu ad-Dardaa (radhi-yAllaahu 'anhu) said:
Certainly, that which I fear the most is when I stand [before my Lord] to account [for my deeds], and it is [then] said to me:
You had knowledge, so what did you do with that which you knew?
Jaami'u Bayaan al-'Ilm - Volume 1, Page 680