Snippet from the Story.
Abdullah Ibn Masud(r.a.) was a young boy used to tend flock of sheep of a Quraysh * cheftian. One day Abdullah(r.a.) was tending his flock he saw two distinguished looking men coming towards him. They looked very tired, hungry and thirsty. They greeted Abdullah(r.a) and said milk one of the sheep for us we are very thirsty. But Abdullah(r.a.) replied I cannot do that because these are not my sheep. Two men did not argue and they liked the Honest reply of Abdullah(r.a.).The two men were none other than the Prophet(s.a.w.) himself and Abu Bakr Siddiq(r.a.)