The Sunnah of the Zuhr prayer is four rak'ahs, and they are combined with a single taslim
Machine translationRead the Arabic original
The questioner:
He says: Honorable Shaykh, may Allah grant you success, is the sunnah of the midday prayer four rak'ahs?
The Shaykh:
As for after the sun rises, this is known by the sun's elevation; when it rises above the height of a spear, the prayer becomes permissible.
The questioner:
Honorable Shaykh, may Allah grant you success. The Sunnah of the Zuhr prayer is four rak'ahs; is it permissible to combine them with a single taslim?
The Shaykh:
It is permissible, but it is better to do it with two taslims. It is better to do it with two taslims, and it is permissible to combine them with one taslim. However, this does not make it like the Zuhr prayer itself. It changes the practice. One returns to the first position, and then... and he prays the four rak'ahs and sits for the final tashahhud. Thank you. Yes.
He says: Honorable Shaykh, may Allah grant you success, is the sunnah of the midday prayer four rak'ahs?
The Shaykh:
As for after the sun rises, this is known by the sun's elevation; when it rises above the height of a spear, the prayer becomes permissible.
The questioner:
Honorable Shaykh, may Allah grant you success. The Sunnah of the Zuhr prayer is four rak'ahs; is it permissible to combine them with a single taslim?
The Shaykh:
It is permissible, but it is better to do it with two taslims. It is better to do it with two taslims, and it is permissible to combine them with one taslim. However, this does not make it like the Zuhr prayer itself. It changes the practice. One returns to the first position, and then... and he prays the four rak'ahs and sits for the final tashahhud. Thank you. Yes.
Source
الفوزان -أشرطة- شرح زاد المستقنع مع الأسئلة - 019-كتاب الصلاة - 10- تكملة صلاة تطوع - 19-7-21 هـ — archive.org (1:16:57)
The Arabic text is a machine transcription of the audio recording.