Allâh's Messenger (ﷺ) said, "Whoever says:

"La ilâha ill-Allâhu waḥdahu la sharîka lahu, lahul-mulku wa lahul-ḥamdu wa Huwa ala kulli shai'in Qadir" [1]

one hundred times a day will get the same reward as given for manumitting ten slaves; and one hundred good deeds will be written in his accounts, and one hundred sins will be deducted from his accounts, and it (his saying) will be a shield for him from Satan on that day till night, and nobody will be able to do a better deed except the one who does more than he." [8:412-0.B]