ber er hver að baki, nema sér bróður eigi

Etymology
From, a phrase uttered by Kári Sölmundarson. Consists of +, from  +  +  +  the dative singular form of  +  + , dative form of  + , the accusative form of  + , form of.

Literally meaning that the "back of each man is bare, unless he has a brother to him".

Proverb

 * 1) he who doesn't have a companion (brother) in battle; is unprotected