The word(s) "لَسْتَ" appears in 10 verse(s) in Quran.

(1) يَا أَيُّهَا الَّذِينَ آمَنُوا أَنفِقُوا مِن طَيِّبَاتِ مَا كَسَبْتُمْ وَمِمَّا أَخْرَجْنَا لَكُم مِّنَ الْأَرْضِ ۖ وَلَا تَيَمَّمُوا الْخَبِيثَ مِنْهُ تُنفِقُونَ وَلَسْتُم بِآخِذِيهِ إِلَّا أَن تُغْمِضُوا فِيهِ ۚ وَاعْلَمُوا أَنَّ اللَّهَ غَنِيٌّ حَمِيدٌ

(سورة البقرة, Al-Baqara, Chapter #2, Verse #267)
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(2) يَا أَيُّهَا الَّذِينَ آمَنُوا إِذَا ضَرَبْتُمْ فِي سَبِيلِ اللَّهِ فَتَبَيَّنُوا وَلَا تَقُولُوا لِمَنْ أَلْقَىٰ إِلَيْكُمُ السَّلَامَ لَسْتَ مُؤْمِنًا تَبْتَغُونَ عَرَضَ الْحَيَاةِ الدُّنْيَا فَعِندَ اللَّهِ مَغَانِمُ كَثِيرَةٌ ۚ كَذَ‌ٰلِكَ كُنتُم مِّن قَبْلُ فَمَنَّ اللَّهُ عَلَيْكُمْ فَتَبَيَّنُوا ۚ إِنَّ اللَّهَ كَانَ بِمَا تَعْمَلُونَ خَبِيرًا

(سورة النساء, An-Nisaa, Chapter #4, Verse #94)
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(3) قُلْ يَا أَهْلَ الْكِتَابِ لَسْتُمْ عَلَىٰ شَيْءٍ حَتَّىٰ تُقِيمُوا التَّوْرَاةَ وَالْإِنجِيلَ وَمَا أُنزِلَ إِلَيْكُم مِّن رَّبِّكُمْ ۗ وَلَيَزِيدَنَّ كَثِيرًا مِّنْهُم مَّا أُنزِلَ إِلَيْكَ مِن رَّبِّكَ طُغْيَانًا وَكُفْرًا ۖ فَلَا تَأْسَ عَلَى الْقَوْمِ الْكَافِرِينَ

(سورة المائدة, Al-Maaida, Chapter #5, Verse #68)
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(4) وَكَذَّبَ بِهِ قَوْمُكَ وَهُوَ الْحَقُّ ۚ قُل لَّسْتُ عَلَيْكُم بِوَكِيلٍ

(سورة الأنعام, Al-An'aam, Chapter #6, Verse #66)
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(5) إِنَّ الَّذِينَ فَرَّقُوا دِينَهُمْ وَكَانُوا شِيَعًا لَّسْتَ مِنْهُمْ فِي شَيْءٍ ۚ إِنَّمَا أَمْرُهُمْ إِلَى اللَّهِ ثُمَّ يُنَبِّئُهُم بِمَا كَانُوا يَفْعَلُونَ

(سورة الأنعام, Al-An'aam, Chapter #6, Verse #159)
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(6) وَإِذْ أَخَذَ رَبُّكَ مِن بَنِي آدَمَ مِن ظُهُورِهِمْ ذُرِّيَّتَهُمْ وَأَشْهَدَهُمْ عَلَىٰ أَنفُسِهِمْ أَلَسْتُ بِرَبِّكُمْ ۖ قَالُوا بَلَىٰ ۛ شَهِدْنَا ۛ أَن تَقُولُوا يَوْمَ الْقِيَامَةِ إِنَّا كُنَّا عَنْ هَـٰذَا غَافِلِينَ

(سورة الأعراف, Al-A'raaf, Chapter #7, Verse #172)
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(7) وَيَقُولُ الَّذِينَ كَفَرُوا لَسْتَ مُرْسَلًا ۚ قُلْ كَفَىٰ بِاللَّهِ شَهِيدًا بَيْنِي وَبَيْنَكُمْ وَمَنْ عِندَهُ عِلْمُ الْكِتَابِ

(سورة الرعد, Ar-Ra'd, Chapter #13, Verse #43)
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(8) وَجَعَلْنَا لَكُمْ فِيهَا مَعَايِشَ وَمَن لَّسْتُمْ لَهُ بِرَازِقِينَ

(سورة الحجر, Al-Hijr, Chapter #15, Verse #20)
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(9) يَا نِسَاءَ النَّبِيِّ لَسْتُنَّ كَأَحَدٍ مِّنَ النِّسَاءِ ۚ إِنِ اتَّقَيْتُنَّ فَلَا تَخْضَعْنَ بِالْقَوْلِ فَيَطْمَعَ الَّذِي فِي قَلْبِهِ مَرَضٌ وَقُلْنَ قَوْلًا مَّعْرُوفًا

(سورة الأحزاب, Al-Ahzaab, Chapter #33, Verse #32)
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(10) لَّسْتَ عَلَيْهِم بِمُصَيْطِرٍ

(سورة الغاشية, Al-Ghaashiya, Chapter #88, Verse #22)
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