Ruling on the follower who missed a rak'ah with the imam reciting the first tashahhud

A listener from Al-Ras says: If a follower joins the prayer with the imam after the imam has prayed one rak'ah of the Zuhr prayer, does the follower recite the first tashahhud when the imam sits, given that the follower has only prayed one rak'ah?
Answer: It is not obligatory for him to do so, because this is not the place for his tashahhud. If he catches one rak'ah with the imam in Zuhr, 'Asr, Maghrib, 'Isha, or Fajr, he is not required to recite the tashahhud when he sits with the imam in the second rak'ah. That is the place for the tashahhud for the one who prayed with the imam from the beginning of the prayer. As for this person, the place for his tashahhud comes when he performs the second rak'ah. If he recites it, there is no harm, if Allah wills. Yes.
The presenter: But if he does not intend to recite it, what does he do during this sitting?
The Shaykh: He remains silent. Either he remains silent, or he recites something similar, but he is not required to recite the tashahhud, because this is not the place for his recitation. However, reciting it and performing it is better than remaining silent, because it is a virtue and because it is dhikr (remembrance of Allah), so performing it is better. Yes.