ANSWER:
You need to talk to him. If he is unable to pronounce it correctly, his prayer is valid but you shouldn’t pray behind him due to corruption in his Aqeedah. But if he can say it correctly but doesn’t want to, the prayer is invalid.
ANSWER:
You need to talk to him. If he is unable to pronounce it correctly, his prayer is valid but you shouldn’t pray behind him due to corruption in his Aqeedah. But if he can say it correctly but doesn’t want to, the prayer is invalid.