It is prescribed to
say Takbir to start sujud-ul-Tilawah (Prostration of Recitation) and when rising from it (the prostration position) during Salah, based on the Hadith of
Ibn ‘Umar (may Allah be pleased with both of them), who said,
“The Messenger of Allah (peace be upon him) used to recite the Qur’an to us. When he came to an Ayat-ul-Sujud, he would say Takbir and perform Sujud and we would perform Sujud with him.”
Abu Dawud) This is based also upon the general meaning of the Hadith:
“The Messenger of Allah (peace be upon him) used to say Takbir with every bending and rising move.”
As for the Takbir when performing Sujud-ul-Tilawah outside the Salah, it should be said when going into the Sujud, but not on rising. If the Imam did not say Takbir when rising from the Sujud, he is not obligated to perform Sujud-ul-Sahw.May Allah grant us success. May peace and blessings be upon our Prophet Muhammad, his family, and Companions.