They that are of weak minds suddenly give way to anger and are gratified without sufficient cause; they are like clouds that are so inconstant. The very birds of prey abstain from touching the dead bodies of those who having been served and benefited by friends, show ingratitude to the latter. Beest thou poor or beest thou rich, thou shouldst honour thy friends. Until some service is asked, the sincerity or otherwise of friends cannot be known.

In plain words: Weak-minded people get angry or pleased for no good reason, changing like clouds. People who are ungrateful to friends who helped them are so low that even vultures will not touch their bodies. Rich or poor, honour your friends. You only learn if a friend is real when you ask for help.