Najafi Q&A: Doubt and Absentmindedness

Must the prostration of forgetfulness (Sujūd al-Sahw) be performed before or after the three Takbīrs at the end of the prayer? Does the worshipper still need to recite these three Takbīrs after the taslīm if he intends to perform Sujūd al-Sahw? Must the worshipper recite tashahhud and give taslīm after Sujūd al-Sahw?

What is the ruling for someone who doubts whether they performed the bowing (Rukūʿ) during the first or second prostration, or after completing them?

If someone recites the qunūt (supplication) mistakenly in a place where it is not prescribed during prayer, is he required to perform the two prostrations of forgetfulness (sajdatā al-sahw)?

Does reciting the three recommended takbīrs after the salām in prayer but before the prostrations of forgetfulness invalidate the immediacy (fawriyyah) required for the prostrations?

Is there a specific prescribed dhikr in the prostrations of forgetfulness, or is one free to choose?

Is there any recommendation to recite three takbīrs after the salām of the prostrations of forgetfulness?

Is there any recommendation (istihbāb) for saying takbīr between the two prostrations of forgetfulness and after them, that is, upon rising from the first prostration, descending into the second, and rising from the second?

Is it obligatory to pronounce the takbīr before performing the prostrations of forgetfulness (sajdatā al-sahw)?

If someone recites the Tashahhud mistakenly in a place other than its designated position during prayer, is Sajdat al-Sahw (the prostration of forgetfulness) required?

What is the duty of someone who realizes, in general, after prayer that they missed one of the prostrations (sujood) or the tashahhud (testification)?