Narrated Abu Hurairah:
that the Prophet (ﷺ) said: "Indeed there is a Surah in the Qur'an of thirty Ayat, which intercedes for a man until he is forgiven. It is [Surah] Tabarak Alladhi Biyadihil-Mulk." (JA)
English reference (JA): Vol. 5, Book 42, Hadith 2891 (JA)
Arabic reference (JA): Book 45, Hadith 3134 (JA)