Who lies for you will lie against you.

Related:

• Do not throw the arrow which will return against you.
  Kurdish...
• Do not throw the arrow which will return against you.
  Kurdish...
• Who gossips to you will gossip of you.
  Turkish...
• If you see no reason for giving thanks, the fault lies in yourself.
  Native American Proverb...
• I will never lie
  to you...
• You can't pray
  a lie...
• A Lie is still a Lie,
  even if you believe it...
• Government lies, and newspapers lie,
  but in a democracy they are different lies...