In which Surah of the Qur'an is the verse (تبارك الفصل - Blessed is the Distinction)?

There is no Quranic verse with the exact wording mentioned in the question. However, the word "Tabaraka" (Blessed be) is mentioned in eight places in the Holy Quran, including:

- {Blessed be Allah, the Lord of the worlds.} [Al-A'raf:54]

- {So blessed be Allah, the best of creators.} [Al-Mu'minun:14]

- {Blessed be He who sent down the criterion upon His servant.} [Al-Furqan:1]

- {Blessed be the name of your Lord, Owner of Majesty and Honor.} [Ar-Rahman:78]

- {Blessed be He in whose hand is dominion.} [Al-Mulk:1]