Never give advice unless asked.

Related:

• Never give advice in a crowd. -
  Arab...
• Rent and Taxes never sleep.
  German...
• A proverb never lies, it is only its meaning which deceives.
  German...
• Don't offer me advice;
  give me money Spanish...
• I always advise people never to give advice. --
  P. G....
• Never give advice...
  A wise man won't need it A fool won't heed it...
• Invalids live longest.
  German...
• A shroud has no pockets.
  German...