It is permissible to combine them.

One can fast beginning from the second day onwards and there is no
reference whether to fast it in a row or separated.

sheikh, can the rozas of shawal be combined with 13,14,15 rozas of this month? Or these 6 razas of shawal must be kept seperately and those 3 days seperately? Is it allowed to fast 3 days now and 3 days of 13,14,15 to make six of this month? Plz reply soon

Fasting | July 12, 2016 3:07 am
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During the month of Ramadan, I was fasting. When I woke up, i had felt my private parts and got a sexual feeling. When I realised I’m fasting, I stopped immediately. Is my fast valid?
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I have 6 fasts to catch up from this Ramadhan as well as 6 from last year and 29 from a few years ago which I couldn’t fast due to illness. I want to make them up now, which should I start with first? Also for the fasts of last year and the 29 from a few years ago, do I need to pay fidyah as well as catch them up because years have passed on them?