The word(s) "أَصْدَقُ" appears in 4 verse(s) in Quran.

(1) اللَّهُ لَا إِلَـٰهَ إِلَّا هُوَ ۚ لَيَجْمَعَنَّكُمْ إِلَىٰ يَوْمِ الْقِيَامَةِ لَا رَيْبَ فِيهِ ۗ وَمَنْ أَصْدَقُ مِنَ اللَّهِ حَدِيثًا

(سورة النساء, An-Nisaa, Chapter #4, Verse #87)
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(2) وَالَّذِينَ آمَنُوا وَعَمِلُوا الصَّالِحَاتِ سَنُدْخِلُهُمْ جَنَّاتٍ تَجْرِي مِن تَحْتِهَا الْأَنْهَارُ خَالِدِينَ فِيهَا أَبَدًا ۖ وَعْدَ اللَّهِ حَقًّا ۚ وَمَنْ أَصْدَقُ مِنَ اللَّهِ قِيلًا

(سورة النساء, An-Nisaa, Chapter #4, Verse #122)
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(3) ۞ قَالَ سَنَنظُرُ أَصَدَقْتَ أَمْ كُنتَ مِنَ الْكَاذِبِينَ

(سورة النمل, An-Naml, Chapter #27, Verse #27)
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(4) وَأَنفِقُوا مِن مَّا رَزَقْنَاكُم مِّن قَبْلِ أَن يَأْتِيَ أَحَدَكُمُ الْمَوْتُ فَيَقُولَ رَبِّ لَوْلَا أَخَّرْتَنِي إِلَىٰ أَجَلٍ قَرِيبٍ فَأَصَّدَّقَ وَأَكُن مِّنَ الصَّالِحِينَ

(سورة المنافقون, Al-Munaafiqoon, Chapter #63, Verse #10)
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