Does one sin by leaving off the voluntary prayers?

Question : Please, my brother. Yes, indeed. Peace be upon you. And upon you be peace. If you please, I have a question, is that possible? What is the question? He says: Honorable Shaykh, regarding the performance of the obligatory acts alone, is that sufficient? And if a person leaves off the voluntary acts, does he sin by doing so?

Answer : It is not obligatory for him to do so if he leaves off the voluntary acts, but it is not befitting for him to leave them off, because the obligatory acts are not free from deficiency and shortcoming, and the voluntary acts make up for that deficiency and shortcoming. Praise be to Allah. May Allah reward you with good. Thank you to the sister who asked.