Quran 7:86 from Surah Al-A'raaf on Divine Marvels.
وَلَا تَقۡعُدُواْ بِكُلِّ صِرَٰطٖ تُوعِدُونَ وَتَصُدُّونَ عَن سَبِيلِ ٱللَّهِ مَنۡ ءَامَنَ بِهِۦ وَتَبۡغُونَهَا عِوَجٗاۚ وَٱذۡكُرُوٓاْ إِذۡ كُنتُمۡ قَلِيلٗا فَكَثَّرَكُمۡۖ وَٱنظُرُواْ كَيۡفَ كَانَ عَٰقِبَةُ ٱلۡمُفۡسِدِينَ
English translation: And (do) not sit on every path threatening and hindering from (the) way (of) Allah (those) who believe in Him and seeking (to make) it crooked And remember when you were few and He increased you And see how was (the) end (of) the corrupters
Transliteration: wala taq'udu bikulli siratin tu'iduna watasudduna an sabili al-lahi man amana bihi watabghunaha iwajan wa-udh'kuru idh kuntum qalilan fakatharakum wa-unzuru kayfa kana aqibatu al-muf'sidina