All perfect praise be to Allaah, The Lord of the Worlds. I testify that there is none worthy of worship except Allaah, and that Muhammad, sallallaahu ‘alayhi wa sallam, is His slave and Messenger.
Dear Brother, the story which you referred to has been reported by many scholars. Imaam Ahmad narrated it in his Musnad from Sa‘eed ibn Jubayr from Ibn ‘Abbaas, who said: "The Prophet, sallallaahu ‘alayhi wa sallam, performed Hajj Tamattu‘. ‘Urwah ibn Az-Zubayr said: Abu Bakr and ‘Umar forbade Hajj Tamattu‘. Ibn ‘Abbaas said: 'What is 'Urayyah (a diminutive form of 'Urwah) saying?' It was said: He says: 'Abu Bakr and ‘Umar forbade Hajj Tamattu‘' Thereupon, Ibn ‘Abbaas said: 'I perceive that they are near to perish. I say, the Prophet, sallallaahu ‘alayhi wa sallam, said, and he says, Abu Bakr and ‘Umar forbade it." [End of quote]
Shu‘ayb Al-Arna’oot said in his revision of Imaam Ahmad's Musnad: "Its chain of narrators is weak as it contains Shareek, who is Ibn ‘Abdullaah An-Nakha‘i; and he had a weak recollection."
Ibn Hazm also reported it, as did Ibn ‘Abd Al-Barr in Jaami‘ Bayaan Al-‘Ilm wa Fadhlih from Shareek. He said: "‘Abdur-Razzaaq said: "Ma‘mar narrated from Ayyoob who said: ‘Urwah said to Ibn ‘Abbaas: 'Do you not retract your opinion regarding Hajj Tamattu‘ for the fear of Allaah? Then, Ibn ‘Abbaas said: 'O 'Urayyah (a diminutive form of 'Urwah)! Ask you mother. 'Urwah said: Abu Bakr and 'Umar did not perform it. Thereupon, Ibn 'Abbaas answered him saying 'I swear by Allaah, you will not die until Allaah has punished you: We narrate to you from the Messenger of Allaah, sallallaahu ‘alayhi wa sallam, and you narrate to us from Abu Bakr and ‘Umar." [End of quote]
It is also important that you refer to Fataawa 33437 and 238573.
Allaah Knows best.