It was
narrated that Mughirah bin Shu’bah said:
“The Messenger of
Allah
(ﷺ) said: ‘If anyone of you stands after two Rak’ah, if he has
not yet stood up fully, let him sit down again, but if he has stood
up
fully, then let him not sit down, and let him perform two
prostrations
for forgetfulness (Sahw).’”