It is narrated from Sayyiduna Abdullah bin Buhaina (may Allah be pleased with him) that the Messenger of Allah (peace and blessings of Allah be upon him) led the Zuhr prayer, and after praying two rak'ahs he stood up and did not sit. Then, when he had completed the prayer, he performed two prostrations and then gave salam afterwards.

Imam Malik, may Allah have mercy on him, said: If a person, after completing four rak'ahs, stands up by mistake and recites (Qur'an) and performs ruku', then when he raises his head from ruku' he remembers that he had already completed the four rak'ahs and established the prayer, then that person should sit down and not perform sujud. And if he has already performed one sujud, he should not perform the second. Then he should recite the tashahhud and perform two sujud of forgetfulness after the salam.