Maarif-ul-Quran (En) - An-Najm : 26
وَ كَمْ مِّنْ مَّلَكٍ فِی السَّمٰوٰتِ لَا تُغْنِیْ شَفَاعَتُهُمْ شَیْئًا اِلَّا مِنْۢ بَعْدِ اَنْ یَّاْذَنَ اللّٰهُ لِمَنْ یَّشَآءُ وَ یَرْضٰى
And how many angels there are in the heavens whose intercession cannot benefit (any one) at all, but after Allah allows (it) for whomsoever He wills and pleases.
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