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.