The topic of Islam and children includes the rights of children in Islam, the duties of children towards their parents, and the rights of parents over their children, both biological and foster children. Also discussed are some of the differences regarding rights with respect to different schools of thought. Muhammad Muhammad established laws and examples (sunnah) in respect of which is obligatory for the Muslim community to follow. Muhammad had seven children, three boys and four girls. All of his sons, including Ibrahim ibn Muhammad, died in infancy. Because of this, his experience as a father is sometimes described as "sorrowful". Muhammad also had an adopted son, Zayd, who is said to be the object of Muhammad's parental affection. He also had two grandsons, Hassan and Hussein, and three granddaughters, Umm Kulthum, Zaynab, and Umamah. In one Islamic tradition, Muhammad ran after Hussein in a game until he caught him. Muhammad used to let Umamah sit on his shoulders while he was praying. When someone expressed astonishment at the Prophet when the Prophet kissed his grandchild, he responded, "what can I do if God has deprived your heart of all human feeling?" Muhammad has been described as being very fond of children in general. Watt attributes this to Muhammad's yearning for children, as most of his own children died before him. He comforted a child whose pet nightingale had died. Muhammad played many games with children, joked with them and befriended them. Muhammad also showed love to children of other religions. Once he visited his Jewish neighbor's son when the child was sick. Once, Muhammad was sitting with a child in his lap, and the child urinated over Muhammad. Embarrassed, the father scolded the child. Muhammad restrained the father and advised him: "This is not a big issue. My clothes can be washed. But be careful with how you treat the child. What can restore his self-esteem after you have dealt with him in public like this?" Rights of children Children have the right to be fed, clothed, and protected until they reach adulthood. Children must have the respect, to enjoy love and affection from their parents. Children have the right to be treated equally, vis-a-vis their siblings in terms of financial gifts. Imam Ahmad bin Hanbal said that preferential treatment of a child is permitted if the child is disabled while others are not. (In Al-Mughni, vol. 5, p.