Al-Mughirah bin Shu'bah narrated that The Messenger of Allah (s.a.w) said:
"The sign of the believers upon the Sirat is: O lord, protect (us), protect (us).'" (DE)
English reference (DE): Vol. 4, Book 11, Hadith 2432 (DE)
Arabic reference (DE): Book 37, Hadith 2619 (DE)