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

(1) وَإِن كَانَ ذُو عُسْرَةٍ فَنَظِرَةٌ إِلَىٰ مَيْسَرَةٍ ۚ وَأَن تَصَدَّقُوا خَيْرٌ لَّكُمْ ۖ إِن كُنتُمْ تَعْلَمُونَ

(سورة البقرة, Al-Baqara, Chapter #2, Verse #280)
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(2) وَكَتَبْنَا عَلَيْهِمْ فِيهَا أَنَّ النَّفْسَ بِالنَّفْسِ وَالْعَيْنَ بِالْعَيْنِ وَالْأَنفَ بِالْأَنفِ وَالْأُذُنَ بِالْأُذُنِ وَالسِّنَّ بِالسِّنِّ وَالْجُرُوحَ قِصَاصٌ ۚ فَمَن تَصَدَّقَ بِهِ فَهُوَ كَفَّارَةٌ لَّهُ ۚ وَمَن لَّمْ يَحْكُم بِمَا أَنزَلَ اللَّهُ فَأُولَـٰئِكَ هُمُ الظَّالِمُونَ

(سورة المائدة, Al-Maaida, Chapter #5, Verse #45)
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(3) فَلَمَّا دَخَلُوا عَلَيْهِ قَالُوا يَا أَيُّهَا الْعَزِيزُ مَسَّنَا وَأَهْلَنَا الضُّرُّ وَجِئْنَا بِبِضَاعَةٍ مُّزْجَاةٍ فَأَوْفِ لَنَا الْكَيْلَ وَتَصَدَّقْ عَلَيْنَا ۖ إِنَّ اللَّهَ يَجْزِي الْمُتَصَدِّقِينَ

(سورة يوسف, Yusuf, Chapter #12, Verse #88)
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(4) إِنَّ الْمُسْلِمِينَ وَالْمُسْلِمَاتِ وَالْمُؤْمِنِينَ وَالْمُؤْمِنَاتِ وَالْقَانِتِينَ وَالْقَانِتَاتِ وَالصَّادِقِينَ وَالصَّادِقَاتِ وَالصَّابِرِينَ وَالصَّابِرَاتِ وَالْخَاشِعِينَ وَالْخَاشِعَاتِ وَالْمُتَصَدِّقِينَ وَالْمُتَصَدِّقَاتِ وَالصَّائِمِينَ وَالصَّائِمَاتِ وَالْحَافِظِينَ فُرُوجَهُمْ وَالْحَافِظَاتِ وَالذَّاكِرِينَ اللَّهَ كَثِيرًا وَالذَّاكِرَاتِ أَعَدَّ اللَّهُ لَهُم مَّغْفِرَةً وَأَجْرًا عَظِيمًا

(سورة الأحزاب, Al-Ahzaab, Chapter #33, Verse #35)
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(5) نَحْنُ خَلَقْنَاكُمْ فَلَوْلَا تُصَدِّقُونَ

(سورة الواقعة, Al-Waaqia, Chapter #56, Verse #57)
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