The Ruling on reciting the Verses of Prostration in the Quiet Prayers
What is the ruling on reciting a Verse in which there is a prostyration in the quiet prayers, such as Zuhr prayer or Asr prayer?
Answer:
It is disliked for the Imam to recite a Verse of prostration in the quiet prayers, because he has no alternative in that case but either to prostrate for it or not. If he does not do so, he is abandoning a Sunnah, and if he does so, he will cause confusion in the minds of the worshippers. Therefore it is better to avoid the cause of such confusion. But if he does recite it, he should not prostrate, so as not to confuse the worshippers.
Source:
Shaykh `Abdul-`Azeez Bin Baz
Fatawa Islamiyah Vol. 2 Page 282