Mixing between boys and girls

Q 4: Some Muslim brothers insist upon disallowing the mixing between girls and boys in this age, are we to blame?

A: If the mixing is as you have mentioned in the beginning of your letter, between four and five years old, there is nothing wrong in this. (Part No. 26; Page No. 334) May Allah grant us success. May peace and blessings be upon our Prophet Muhammad, his family, and Companions.