A man recited the Quran in the presence of Umar, and Umar corrected him. The man said, "I recited it before the Messenger of Allah ﷺ and he did not correct me."So we gathered before the Prophet ﷺ, and the man recited to the Prophet ﷺ, who said to him, "You have recited well."Umar seemed troubled by this, so the Prophet ﷺ said, "Umar, the entire Quran is correct, as long as one does not turn a verse of punishment into one of mercy or a verse of mercy into one of punishment."On another occasion, Abdul-Samad said, "Abu Thabit, from his book."
حدثنا عبد الصمد حدثنا حرب بن ثابت كان يسكن بني سليم قال حدثنا
قرأ رجل عند عمر فغير عليه فقال قرأت على رسول الله ﷺ فلم يغير علي قال فاجتمعنا عند النبي ﷺ قال فقرأ الرجل على النبي ﷺ فقال له قد أحسنت قال فكأن عمر وجد من ذلك فقال النبي ﷺ يا عمر إن القرآن كله صواب ما لم يجعل عذاب مغفرة أو مغفرة عذابا وقال عبد الصمد مرة أخرى أبو ثابت من كتابه
Its isnad is hasan, because of Harb bin Thabit, whom Ibn Hibban deemed trustworthy and whom no one criticized. The hadith was mentioned previously at 9641.