His mercy with children
Anas, may Allah be pleased with him, said that the messenger of Allah, salllaAllahualihiwasallam, used to visit Al-Ansar, shake hands with their children and wipe over their heads.
Compiled by An-Nassa`yand IbnHibban and classed as Sheeh by Al- Albany.
Consider how merciful and lenient was the messenger of Allah, salllaAllahualihiwasallam, with the children. Stick to his Sunnah, do not you ever talk harshly to a child in a mosque or harm him, let alone neglecting educating him according to the Sunnah.