What is the ruling on taking young children to the mosque?

Question:
The questioner asks: What is the ruling on a man who goes to the mosque and takes his son, who is not yet three years old, with him, and the child disturbs the people during the prayer?

Answer:
If he fears for his son if he leaves him behind, there is no harm in him taking him to the mosque, placing him beside him, and looking after him; there is no objection to that. However, if he does not fear for him, he should leave him with his mother at home, or leave him with his brothers, or leave him with someone in the house; in that case, he should not take him to the mosque.
Because he occupies himself and occupies the worshippers. He should not take him except out of necessity, if he fears for him and there is no one available to take care of this child. In that case, there is no harm in him taking him to the mosque, but he must control him, look after him, and ensure that no harm comes from him to the mosque or to the people.