Is there any authentic evidence regarding the prohibition of children from entering mosques?

Question:
Some people are bothered by children entering the mosques, and they cite a hadith on this matter. What is the ruling in this issue?

Answer:
If the children are seven years old or older, there is nothing wrong with them; they pray with the people. As for those under seven, it is better for them to stay in their homes, provided they do not annoy the people, or to leave them behind the rows until their father is finished and takes them away, if he needs them to come with him and has no one to look after them. However, if the child is seven years old or older, he must bring him so that he can learn and practice. As for the young ones, he should not bring them if they annoy the people.
As for the hadith: it is not authentic according to the scholars. It is not an authentic hadith. The Prophet (peace and blessings be upon him) approved of Hassan reciting poetry in the mosque. But if the children are very young or are insane and they annoy the people, they are prevented. If the child is under seven or is insane and annoys the people, he is prevented. As for the insane person who does not annoy the people: he listens and prays with the people in a proper manner, and does not annoy anyone; he is not prevented.