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Abu Hurayrah reported that the Prophet (ﷺ) ﷺ said: “There is a sūrah in the Qur'ān of thirty verses; it intercedes for a man until he is forgiven, and it is Sūrat Tabārak (Blessed Be He in Whose Hand is the Dominion).” Reference: Jami` at-Tirmidhi 2891
Source: sunnah.com
Other translations
Arabic
عَنْ أَبِي هُرَيْرَةَ، عَنِ النَّبِيِّ صلى الله عليه وسلم قَالَ " إِنَّ سُورَةً مِنَ الْقُرْآنِ ثَلاَثُونَ آيَةً شَفَعَتْ لِرَجُلٍ حَتَّى غُفِرَ لَهُ وَهِيَ سُورَةُ تَبَارَكَ الَّذِي بِيَدِهِ الْمُلْكُ."
sunnah.com