Hazrat Aswad narrates that when Hazrat Umar would begin the prayer, he would say Allahu Akbar and then recite these words: O Allah, You are Pure and all praise is for You. Your name is blessed, Your majesty is exalted, and there is no deity except You. After this, he would recite Ta'awwudh and then recite Surah Al-Fatihah.

Hazrat Aswad narrates that I heard Hazrat Umar, when he began the prayer, say Allahu Akbar, then recite these words: O Allah, You are pure and all praise is for You. Your name is blessed, Your majesty is exalted, and there is no deity except You. After this, he recited the Ta'awwudh.

Hazrat Nafi' narrates that Hazrat Ibn Umar (may Allah be pleased with them) used to say these words for seeking refuge: "I seek refuge with Allah from the accursed Satan." Or he used to say these words: "I seek refuge with Allah, the All-Hearing, All-Knowing, from the accursed Satan."

Hazrat Abdullah bin Muslim bin Yasar says that once I was reciting "A'udhu billahi as-sami' al-'aleem," so my father said, "What is this? You should say 'A'udhu billahi min ash-shaytan ir-rajim.' Allah Almighty is indeed All-Hearing and All-Knowing."

Ayyub narrates that Muhammad used to recite the Ta'awwudh before and after Surah Al-Fatihah. In his Ta'awwudh, he used to say these words: I seek refuge in Allah from the evil suggestions of Satan, and I seek refuge in Allah from their presence with me.

Hazrat Jubair bin Mut’im narrates that I heard the Messenger of Allah (peace and blessings be upon him) at the beginning of the prayer saying: O Allah! I seek Your protection from the disease incited by the accursed Satan, from the arrogance imposed by him, and from the poetry inspired by him.