Hadith 458:23
He said: And the Messenger of Allah, may Allah bless him and grant him peace, used to teach us words that we would supplicate with in our prayer, or he said: at the end of our prayer: "O Allah, I ask You for steadfastness in the matter, and I ask You for the determination of right-mindedness, and I ask You for gratitude for Your favor, and the excellence of Your worship. And I ask You for a sound heart, and a truthful tongue, and I seek Your forgiveness for what You know, and I ask You for the best of what You know, and I seek refuge in You from the evil of what You know."
قال: وكان رسول الله صلى الله عليه وسلم يعلمنا كلمات ندعو بهن في صلاتنا، أو قال في دبر صلاتنا: " اللهم إني أسألك الثبات في الأمر، وأسألك عزيمة الرشد، وأسألك شكر نعمتك، وحسن عبادتك، وأسألك قلبا سليما، ولسانا صادقا، وأستغفرك لما تعلم، وأسألك من خير ما تعلم، وأعوذ بك من شر ما تعلم "