Sahih Muslim 48:46

Abu Malik reported on the authority Of his father that he heard Allah's Messenger (ﷺ) as saying to the person who bad come to him and asked him as to how he should beg his Lord, that he should utter these words:

" O Allah, grant me pardon, have mercy upon me, protect me, provide me sustenance," and he collected his fingers together except his thumb and said: It is in these words (that there is supplication) which sums up for you (the good) of this world and that of the Hereafter.