Quran Quote  : 

Quran Ayats (Verses) regarding Boastful of their righteousness

أَلَمۡ تَرَ إِلَى ٱلَّذِينَ يُزَكُّونَ أَنفُسَهُمۚ بَلِ ٱللَّهُ يُزَكِّي مَن يَشَآءُ وَلَا يُظۡلَمُونَ فَتِيلًا

49. Have you not seen those who declare themselves [182] as pure? Rather, it is Allah Who purifies whom He wills, and they should not be wronged (even) as much as a date-thread.

Surah Name : An-Nisa   Surah Number : 4   Ayat Number: 49

لِّكَيۡلَا تَأۡسَوۡاْ عَلَىٰ مَا فَاتَكُمۡ وَلَا تَفۡرَحُواْ بِمَآ ءَاتَىٰكُمۡۗ وَٱللَّهُ لَا يُحِبُّ كُلَّ مُخۡتَالٖ فَخُورٍ

23. So that you do not grieve over what has passed you by, nor rejoice [78] over what He has given you. And Allah does not love any arrogant boaster [79].

Surah Name : Al-Hadeed   Surah Number : 57   Ayat Number: 23

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