Sayyiduna Zayd bin Thabit (may Allah be pleased with him) narrates: I recited Surah al-Najm in the presence of the Messenger of Allah (peace and blessings be upon him), and he (peace and blessings be upon him) did not prostrate.
(b) It is possible that the Messenger of Allah (peace and blessings be upon him) did not prostrate because Sayyiduna Zayd bin Thabit (may Allah be pleased with him) did not prostrate, and he was the one reciting. (And Allah knows best.)
Hadith Referenceالسنن الكبرى للبيهقي / كتاب الصلاة / 3703