In English means: "We're all in the wind together". It is used to express unification of a group of people around the same situation or problem. It is similar to the English phrase: "We're all in this together" e.g.
Person 1: "Nobody had the time to solve more than 50% of this exam" Person 2: "I think I'm gonna have to repeat the course" Person 1: "Kellna bl hawa sawa my friend"