Quran 43:86 from Surah Az-Zukhruf on Divine Marvels.
وَلَا يَمۡلِكُ ٱلَّذِينَ يَدۡعُونَ مِن دُونِهِ ٱلشَّفَٰعَةَ إِلَّا مَن شَهِدَ بِٱلۡحَقِّ وَهُمۡ يَعۡلَمُونَ
English translation: And not have power those whom they invoke besides Him besides Him (for) the intercession except who testifies to the truth and they know
Transliteration: wala yamliku alladhina yad'una min dunihi al-shafa'ata illa man shahida bil-haqi wahum ya'lamuna