Hadith #794 (Sahih Muslim)
Book: The Book of Prayers
Narrator(s): Abdah bin 'Abdullah al-Saffar عبدة بن عبد الله الصفار
Grade: Sahih

‘Umar b. al-Khattab used to recite loudly these words: Subhanak Allahumma wa bi hamdika wa tabarakasmuka wa ta’ala jadduka wa la ilaha ghairuka  and did not recite Bismillah ir- Rahman-ir-Rahim (loudly) at the beginning of the recitation or at the end of it.

Source: https://parallelquran.com/hadith/sahih-muslim-794/