The word(s) "واحدا" appears in 5 verse(s) in Quran.

(1) أَمْ كُنتُمْ شُهَدَاءَ إِذْ حَضَرَ يَعْقُوبَ الْمَوْتُ إِذْ قَالَ لِبَنِيهِ مَا تَعْبُدُونَ مِن بَعْدِي قَالُوا نَعْبُدُ إِلَـٰهَكَ وَإِلَـٰهَ آبَائِكَ إِبْرَاهِيمَ وَإِسْمَاعِيلَ وَإِسْحَاقَ إِلَـٰهًا وَاحِدًا وَنَحْنُ لَهُ مُسْلِمُونَ

(سورة البقرة, Al-Baqara, Chapter #2, Verse #133)
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(2) اتَّخَذُوا أَحْبَارَهُمْ وَرُهْبَانَهُمْ أَرْبَابًا مِّن دُونِ اللَّهِ وَالْمَسِيحَ ابْنَ مَرْيَمَ وَمَا أُمِرُوا إِلَّا لِيَعْبُدُوا إِلَـٰهًا وَاحِدًا ۖ لَّا إِلَـٰهَ إِلَّا هُوَ ۚ سُبْحَانَهُ عَمَّا يُشْرِكُونَ

(سورة التوبة, At-Tawba, Chapter #9, Verse #31)
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(3) لَّا تَدْعُوا الْيَوْمَ ثُبُورًا وَاحِدًا وَادْعُوا ثُبُورًا كَثِيرًا

(سورة الفرقان, Al-Furqaan, Chapter #25, Verse #14)
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(4) أَجَعَلَ الْآلِهَةَ إِلَـٰهًا وَاحِدًا ۖ إِنَّ هَـٰذَا لَشَيْءٌ عُجَابٌ

(سورة ص, Saad, Chapter #38, Verse #5)
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(5) فَقَالُوا أَبَشَرًا مِّنَّا وَاحِدًا نَّتَّبِعُهُ إِنَّا إِذًا لَّفِي ضَلَالٍ وَسُعُرٍ

(سورة القمر, Al-Qamar, Chapter #54, Verse #24)
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