Musannaf Ibn Abi Shaybah

Yunus narrates that once an imam of the central mosque made a mistake in prayer, but he did not perform the prostration of forgetfulness (sajdah sahw). Some people performed the sajdah sahw and some did not. This issue was presented to Hasan, and he said that in this situation, it is not obligatory for the people to perform the sajdah. When this was mentioned to Ibn Sirin, he considered the action of those who performed the sajdah to be preferable.

Ibrahim and Hazrat Ata state that when the imam does not perform the prostration of forgetfulness (sajda-e-sahw), it is also not obligatory upon the people.

Hazrat Wahib bin Ajlan narrates that he saw Hazrat Qasim and Hazrat Salim offering prayer behind an imam. The imam made a mistake (sahu) but did not perform the prostration (sajdah), so both of them also did not perform the prostration.

Hazrat Hammad says that if the Imam becomes makes a mistake and does not perform the prostration of forgetfulness (sujood as-sahw), then the people should also not perform the prostration of forgetfulness (sujood as-sahw).

Hazrat Mas'ar says that I asked Hazrat Hakam and Hazrat Hammad about this matter, so Hazrat Hakam said that the people will perform prostration, and Hazrat Hammad said that prostration is not obligatory upon them.