The word(s) "وَاحِدًا" 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)
(Arabic, Transliteration, Urdu (Ahmed Ali), Urdu (Jalandhry), Farsi, Yusuf Ali, Shakir, Picthal, Mohsin Khan, French, Spanish, Indonesian, Malay, German, Bosnian, Russian, Dutch, Italian, Portuguese, Tafsir - Jalal ad-Din, Tafsir - King Fahad Quran Complex)

(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)
(Arabic, Transliteration, Urdu (Ahmed Ali), Urdu (Jalandhry), Farsi, Yusuf Ali, Shakir, Picthal, Mohsin Khan, French, Spanish, Indonesian, Malay, German, Bosnian, Russian, Dutch, Italian, Portuguese, Tafsir - Jalal ad-Din, Tafsir - King Fahad Quran Complex)

(3) لَّا تَدْعُوا الْيَوْمَ ثُبُورًا وَاحِدًا وَادْعُوا ثُبُورًا كَثِيرًا

(سورة الفرقان, Al-Furqaan, Chapter #25, Verse #14)
(Arabic, Transliteration, Urdu (Ahmed Ali), Urdu (Jalandhry), Farsi, Yusuf Ali, Shakir, Picthal, Mohsin Khan, French, Spanish, Indonesian, Malay, German, Bosnian, Russian, Dutch, Italian, Portuguese, Tafsir - Jalal ad-Din, Tafsir - King Fahad Quran Complex)

(4) أَجَعَلَ الْآلِهَةَ إِلَـٰهًا وَاحِدًا ۖ إِنَّ هَـٰذَا لَشَيْءٌ عُجَابٌ

(سورة ص, Saad, Chapter #38, Verse #5)
(Arabic, Transliteration, Urdu (Ahmed Ali), Urdu (Jalandhry), Farsi, Yusuf Ali, Shakir, Picthal, Mohsin Khan, French, Spanish, Indonesian, Malay, German, Bosnian, Russian, Dutch, Italian, Portuguese, Tafsir - Jalal ad-Din, Tafsir - King Fahad Quran Complex)

(5) فَقَالُوا أَبَشَرًا مِّنَّا وَاحِدًا نَّتَّبِعُهُ إِنَّا إِذًا لَّفِي ضَلَالٍ وَسُعُرٍ

(سورة القمر, Al-Qamar, Chapter #54, Verse #24)
(Arabic, Transliteration, Urdu (Ahmed Ali), Urdu (Jalandhry), Farsi, Yusuf Ali, Shakir, Picthal, Mohsin Khan, French, Spanish, Indonesian, Malay, German, Bosnian, Russian, Dutch, Italian, Portuguese, Tafsir - Jalal ad-Din, Tafsir - King Fahad Quran Complex)