Skepticism about the righteous is the most important outcome of accompanying wicked and the wrongdoers.
The commander of the faithful, Imam Ali (peace be upon him) says:
Keeping company with the evildoers will bring about suspiciousness and distrust of the righteous and good people.
SIFAT USH-SHIA - The Qualities of the shia: Sheikh Sadooq: 5
source : erfan.ir