The ruling on fasting six days of Shawwal before making up missed fasts?

Question : The questioner asks: What is your opinion of one who fasts six days of Shawwal before fasting the days he owes from Ramadan, especially since the exams are after the six days of Shawwal?

Answer : The answer to that is from the saying of the Prophet (peace and blessings be upon him). The Prophet said: And if a person has missed fasts to make up and he fasts the six, did he fast them after Ramadan or before Ramadan? Pay attention, this man fasted twenty-four days of Ramadan.
How many days does he have left? Six days. If he fasts the six days of Shawwal before fasting the six days of make-up, can it be said that he fasted Ramadan and then followed it with six days of Shawwal? No, he did not fast Ramadan. It is not said that he fasted Ramadan unless he completed it. Therefore, the reward for fasting six days of Shawwal is not established for one who fasts them while he has missed fasts from Ramadan to make up. This issue is not from the category of scholarly disagreement regarding the permissibility of voluntary fasting for one who has missed fasts to make up, because the disagreement in that case concerns days other than the six. As for the six days, they are attached to Ramadan, and their reward cannot be established except for one who completed Ramadan.