Is it permissible for the imam not to prostrate in the prostration of Surat Sad due to scholarly disagreement?

Question:
May Allah reward you, Honorable Shaykh. This listener who sent these questions is Ahmad ibn Shu'ayr al-'Umrī. He says: Honorable Shaykh, I have memorized the Book of Allah the Exalted, and praise be to Allah. I ask Honorable Shaykh Salih to pray for my steadfastness, and for the guidance and steadfastness of the young men and women of the Muslims. My question is: In the last ten days of Ramadan, the imam recited Surat Sad in the tarawih prayer and did not prostrate. When we asked him the reason—did he forget or do it intentionally?—he answered that there is a disagreement on this. So the question remains, Honorable Shaykh: Does the disagreement permit him not to prostrate? Please inform us, may Allah reward you.

Answer:
Yes, if he holds that there is no prostration, then he does not prostrate, because there is a disagreement regarding the prostration in the prayer: is it a prostration of gratitude or a prostration of recitation? According to the saying of the Prophet (peace and blessings be upon him) and the people of knowledge, if he adopts one of the opinions, then there is no blame on him in that, because the matter is plausible. Yes.