I realised the mistake after I had made takbir for dua-e-qunoot. Sajda Sahw was performed thereafter, as the mistake was realised. Does the salaat have to be repeated? Can the same surah be recited in different rakah for any salaat? Is this permitted?
It is undesirable to repeat a Surah in another Rakaat. However, that does not necessitate Sajdah-e-Sahw.
and Allah Ta’ala Knows Best
Mufti Ebrahim Desai