Surly, you know this and know that Islam is a universal religion addresses all people; because it is the religion of all prophets and the religion that Allah has chosen for people; Allah almighty says: "Truly, the religion with Allah is Islam" [Al-Imran]
The active caller to Allah is the caller that is present in everywhere, and performs his role accurately in every situation. In his house, he is the best husband and father. In the street, he is a caller to everyone he meets.
The boy is a trust given to his parents; furthermore, his heart is a pure jewel; it is accepter to whatever is engraved on it. If he has been accustomed to the good, he would apply it in his life and he would have the reward of this shared by his parents and instructor.