⇒ to err on the side of justice
"To err is human, to forgive divine"
Llewelyn was his sister's husband and therefore entitled to err.Here Be Dragons
Both the boy and Chade were eager for us to press on, but I was determined to err on the side of caution after our near disaster.THE GOLDEN FOOL: Book Two of the Tawny Man (2002)
more or less as yainy oonoatimy) will err little more than Bilbo, Meriadoc, or Peregrin.THE LORD OF THE RINGS (2004)