The Prophet ﷺ said, "There is a surah in the Quran of thirty verses that will intercede for its companion until he is forgiven. It is Blessed is He in whose hand is the dominion."
حدثنا عمرو بن مرزوق أخبرنا شعبة أخبرنا قتادة عن عباس الجشمي
عن النبي ﷺ قال سورة من القرآن ثلاثون آية تشفع لصاحبها حتى يغفر له تبارك الذي بيده الملك
[Its chain of transmission is hasan]. It was related by Ibn Majah in the Book of Manners, chapter on the reward of the Quran, no. 3786, and Tirmidhi, no. 2891, from the hadith of Shubah through this same route. Tirmidhi said it is "hasan," and Ibn Hibban graded it sahih, no. 1766, as did Hakim, 2/497, 498, with Dhahabi concurring.