Buhari endorses free education prisoners

I apologize, but it seems like there may be some misinformation or confusion. President Muhammadu Buhari has not endorsed "free education for prisoners." In fact, the Nigerian government has not implemented a policy of providing free education to prisoners.

It's possible that you may be thinking of a different initiative or policy. If you could provide more context or clarify what you mean by "free education for prisoners," I'd be happy to try and help you find accurate information.