1. Ali ibn Ibrahim ibn Hashim has narrated from his father from Ibn Abi ‘Umayr from Jamil and Muhammad ibn ’Isma‘il from al-Fadl ibn Shadhan from Ibn Abi ‘Umayr from Jamil ibn Darraj from Zurarah who has said the following: “I once asked abu Ja‘far (a.s.), about one who forgets the opening Takbir (Allah is great beyond description). He (the Imam) said, ‘He says it again.’”

Translation: Muhammad Sarwar·Thaqalayn link·The Arabic above is the original.

2. Al-Husayn ibn Muhammad al-Ash’ariy has narrated from ‘Abd Allah ibn ‘Amir from Ali ibn Mahziyar from Fadalah from Aban from al-Fadl ibn ‘Abd al-Malik or ibn abu Ya‘fur who has said the following: “About a man who performs Salah (prayer) but forgets to say the opening Takbir (Allah is great beyond description) if Takbir (Allah is great beyond description) for Ruku‘ (bowing down on one’s knees) is sufficient. Abu ‘Abd Allah (a.s.), has said, ‘It is not sufficient. He performs Salah (prayer) again when he finds out that he has not said the Takbir (Allah is great beyond description).”’

Translation: Muhammad Sarwar·Thaqalayn link·The Arabic above is the original.

3. Muhammad ibn Yahya in a marfu‘ manner has narrated from the following: “Al-Rida (a.s.), has said, ‘An Imam carries and sustains the conjectures of those who are behind him except the opening Takbir (Allah is great beyond description).”’

Translation: Muhammad Sarwar·Thaqalayn link·The Arabic above is the original.