He prepared but did not rise from the first tashahhud, so he is required to return
Machine translationRead the Arabic original
The questioner : If he deviated, it is obligatory for the man.
The Shaykh : To mention before.
The questioner : Before, so it means what he slaughters.
The Shaykh : It means he prepared but did not slaughter.
The questioner : Okay, it is obligatory.
The Shaykh : He returns, and does he have to perform sujud al-sahw or not?
The questioner : No, no, no.
The Shaykh : He does not have to perform sujud, whether or not. Why?
The questioner : Because he did not leave out anything.
The Shaykh : And he did not add anything; he did not leave out anything and did not add anything. Okay.
The Shaykh : To mention before.
The questioner : Before, so it means what he slaughters.
The Shaykh : It means he prepared but did not slaughter.
The questioner : Okay, it is obligatory.
The Shaykh : He returns, and does he have to perform sujud al-sahw or not?
The questioner : No, no, no.
The Shaykh : He does not have to perform sujud, whether or not. Why?
The questioner : Because he did not leave out anything.
The Shaykh : And he did not add anything; he did not leave out anything and did not add anything. Okay.
Source
قناة «فضيلة الشيخ محمد بن صالح العثيمين»، 2151تأهَّب ولم ينهض عن التشهد الأول وجب عليه الرجوع📔 الشرح الممتع على زاد المستقنع - ابن عثيمين — youtube.com
The Arabic text is a machine transcription of the audio recording.