Is it permissible to combine the intention of making up fasts from Ramadan with the six days of Shawwal?

Question : It is an error for one who issues a fatwa stating that a person may intend to combine making up Ramadan fasts with the six days of Shawwal. For example, if he owes six days of make-up fasts, he says, "I will fast the six days of make-up and intend them for the make-up and for six days of Shawwal." Is that sufficient?

Answer : It is not sufficient, because the six days of Shawwal are attached to Ramadan. Whoever fasts Ramadan and then follows it with six days of Shawwal, it is not valid.