The Seven Voyages of Sindbad the Sailor. What is Hindbad most motivated by in this passage.

Hindbad was a humble porter who carried packages everywhere; on one occasion, while he was doing his work, he stopped to rest next to a mansion, and while he saw the rich men dining bitterly mourning his fate, the mansion was of Sindbad, who upon seeing him in that state, felt sorry and invited him to dine.