Hazrat Abu Majliz says that while stoning the Jamarat, I could not remember how many pebbles I had thrown. So I asked Hazrat Ibn Umar (may Allah be pleased with them) about this, but he did not give me any answer. Meanwhile, Hazrat Ibn al-Hanafiyyah passed by; I asked him, and he said, "O servant of Allah! Repeat the stoning. In our view, nothing is greater than prayer; when any of us forgets in prayer, he repeats it." I mentioned this to Hazrat Ibn Umar (may Allah be pleased with them), and he said, "They are the Ahl al-Bayt and are more knowledgeable."

Hazrat Ismail bin Abi Khalid says that Hazrat Sha'bi said that he will repeat the prayer. I mentioned this to Hazrat Abu Duhai, so he said that Hazrat Shurayh was also of the opinion that the prayer should be repeated.

4493 - I mentioned it to Abu al-Duha, and he said: (Shurayh) used to say: He should repeat.

Hazrat Tawus says that if, while performing prayer, you do not know how many units you have prayed, then repeat it once. If the same situation occurs again, there is no need to repeat it again.

Hazrat Ata says that he will repeat the prayer.

Hazrat Ata says that he will repeat it once.

When Hazrat Abdul Karim, Hazrat Saeed bin Jubair, and Hazrat Maymoon experienced doubt during prayer, they used to repeat the prayer.

Hazrat Sha'bi and Hazrat Sa'id bin Jubair say that Sajdah Sahw is performed in Nafl (voluntary) prayers.

Hasan believed in performing Sajdah Sahw in Nafl prayers.

Hazrat Saeed bin Musayyib says that just as there is sujood al-sahw in obligatory prayers, similarly there is sujood al-sahw in voluntary prayers as well.