Originally Posted by muslimgirl12
No, you have to do them separately. It is not valid to combine making up missed Ramadaan fasts with fasting six days of Shawwaal with one intention.
With regard to fasting the six days of Shawwaal, they are connected to Ramadaan and can only done after making up missed Ramadaan fasts. If he fasts them before making up missed Ramadaan fasts he will not attain that reward, because the Prophet (peace and blessings of Allaah be upon him) said: “Whoever fasts Ramadaan then follows it with six days of Shawwaal, it will be as if he fasted for a lifetime.” (Narrated by Muslim, Abu Dawood, al-Tirmidhi, al-Nisaa’i and Ibn Maajah). It is well known that whoever still owes days from Ramadaan is not regarded as having fasted Ramadaan until he makes up the days he missed.