Sulaiman bin Khatir al-'Abdi سليمان بن كثير العبدي · Chapters on Supplication

The Messenger of Allah (ﷺ) said: “Whoever sits in a sitting and engages in much empty, meaningless speech and then says before getting from that sitting of his: ‘Glory is to You, O Allah, and praise, I bear witness that there is none worthy of worship except You, I seek You forgiveness, and I repent to You, (Subḥānaka Allāhumma wa biḥamdika, ashhadu an lā ilāha illā anta, astaghfiruka wa atūbu ilaik)’ whatever occurred in that sitting would be forgiven to…

that whenever the Prophet (ﷺ) wanted to do a matter, he would say: “O Allah, make it good for me and choose for me. (Allāhumma khir lī wakhtar lī)”