Is the prostration of forgetfulness (sujud al-sahw) obligatory for the worshipper (ma'mum) if he forgets the glorification (tasbih) in bowing (ruku') or prostration (sujud) in the rak'ah he catches up with the Imam?

A worshiper who forgets a glorification (tasbih) does not need to perform the prostration of forgetfulness (sujud al-sahw), because the Imam bears it on his behalf. If a worshiper makes a mistake without his Imam, there is no prostration of forgetfulness upon him, according to the general consensus of scholars, based on the hadith: "There is no forgetfulness (prostration) upon one who is behind the Imam. If his Imam forgets, then it is upon him and upon those behind him."