Sirach 28:11

11 An hasty contention kindleth a fire: and an hasty fighting sheddeth blood.

Sirach 28:11 In-Context

9 A sinful man disquieteth friends, and maketh debate among them that be at peace.
10 As the matter of the fire is, so it burneth: and as a man's strength is, so is his wrath; and according to his riches his anger riseth; and the stronger they are which contend, the more they will be inflamed.
11 An hasty contention kindleth a fire: and an hasty fighting sheddeth blood.
12 If thou blow the spark, it shall burn: if thou spit upon it, it shall be quenched: and both these come out of thy mouth.
13 Curse the whisperer and doubletongued: for such have destroyed many that were at peace.

The Brenton translation of the Septuagint is in the public domain.