The Prophet ﷺ used to say after giving the salam at the end of the dawn prayer, "O Allah, I ask You for beneficial knowledge, wholesome provision, and deeds that are accepted."
حدثنا أبو بكر بن أبي شيبة حدثنا شبابة حدثنا شعبة عن موسى بن أبي عائشة عن مولى لأم سلمة
أن النبي ﷺ كان يقول إذا صلى الصبح حين يسلم اللهم إني أسألك علما نافعا ورزقا طيبا وعملا متقبلا
Sahih. Ahmad narrated it, 6/305, 322, from the hadith of Shuba, from a freedman of Umm Salama named Abdullah bin Shaddad, as stated in Taqrib Tahdhib and Nukat Ziraf, 13/46, and others. So the chain is sahih, and it has a daif corroborating witness in Tabarani's Al-Saghir, hadith 735. Haythami said in Al-Majma, 10/111, "Its narrators are trustworthy."