This is not permissible unless it has a legitimate reason for it.

kindly follow the link given.
https://islamqa.info/en/48998

sheikh can i pray any nawafil after fajr prayer if there is still time before the start of prohibited time (when sunrise starts)or is it simply forbidden to pray anything after 2 fardh rakaat of fajr?

Prayer | June 24, 2016 3:54 am
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i heard hadeets one has to recite surah fatiha in all rakah or else prayer is invalid also heard if someone came late to masjid and got rukoo with imam in the salah his rakah will be valid , so do i have to repeat the rakah or it will be enough.
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I would like to ask if we pray optional prayer (nafeel) at home, will the reward be 50 times more? Please quote through authentical Hadeeth.