What is the ruling on the prayer of a woman whose child plays in front of her and climbs on her during prayer?

The prayer is valid in this situation, but care should be taken to ensure that the child does not pass in front of the worshipper so as not to diminish the reward of the prayer. It is not permissible to carry the child during prayer or allow him to climb onto one's back if his body or clothes are impure. However, if you do not know this, the original state is purity. There is no harm in prolonging the prostration until the child descends from the worshipper's back and sits on the ground, as the Prophet, peace and blessings be upon him, said: "But my son mounted me, and I disliked to hasten him until he had fulfilled his need."