‘Umar bin ‘Abdil-Azeez 151 AH (may Allah have mercy on him) said,
من عبد الله بغير علم كان ما يفسد أكثر مما يصلح
“Whoever worships Allah without knowledge corrupts more than he rectifies.”
Source: Ibn Abi Shaybah in “Al-Musannaf” 3098, ad-Daarimi in his “Sunan” 313, and Ibn Battah in “al-Ibaanah” 579.
Trying to Follow the Salaf 
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