The sheikh felt when his children and grandchildren did not help him
The answer is: disappointment.
The Sheikh was disappointed when his children and grandchildren did not help him.
He hoped they could help him in some way and was disappointed when they failed to do so.
He was especially disappointed because he had such high expectations of his children and grandchildren.
Despite his disappointment, the sheikh still believed in the goodness of people and believed that there were some kind of lessons that could be learned from this experience.
He was determined to maintain a positive outlook and continue to pass on his knowledge and wisdom to the next generation.
