أحسن الله إليك If a person prays 3 rakahs instead of 2 and realizes it in the 3rd rakah ( in rukoo) then does sajda sahu, does this suffice or do they repeat the prayer? جزاك الله خيرا

Ustadh AbdulAziz al-Haqqan
Sujood assahw as they did not do the tahiyyat.