Quran 2:221 from Surah Al-Baqara on Divine Marvels.
وَلَا تَنكِحُواْ ٱلۡمُشۡرِكَٰتِ حَتَّىٰ يُؤۡمِنَّۚ وَلَأَمَةٞ مُّؤۡمِنَةٌ خَيۡرٞ مِّن مُّشۡرِكَةٖ وَلَوۡ أَعۡجَبَتۡكُمۡۗ وَلَا تُنكِحُواْ ٱلۡمُشۡرِكِينَ حَتَّىٰ يُؤۡمِنُواْۚ وَلَعَبۡدٞ مُّؤۡمِنٌ خَيۡرٞ مِّن مُّشۡرِكٖ وَلَوۡ أَعۡجَبَكُمۡۗ أُوْلَٰٓئِكَ يَدۡعُونَ إِلَى ٱلنَّارِۖ وَٱللَّهُ يَدۡعُوٓاْ إِلَى ٱلۡجَنَّةِ وَٱلۡمَغۡفِرَةِ بِإِذۡنِهِۦۖ وَيُبَيِّنُ ءَايَٰتِهِۦ لِلنَّاسِ لَعَلَّهُمۡ يَتَذَكَّرُونَ
English translation: And (do) not [you] marry [the] polytheistic women until they believe And a bondwoman (who is) believing (is) better than a polytheistic woman [and] even if she pleases you And (do) not give in marriage (your women) (to) [the] polytheistic men until they believe and a bondman (who is) believing (is) better than a polytheistic man [and] even if he pleases you [Those] they invite to the Fire and Allah invites to Paradise and [the] forgiveness by His permission And He makes clear His Verses for the people so that they may take heed
Transliteration: wala tankihu al-mush'rikati hatta yu'minna wala-amatun mu'minatun khayrun min mush'rikatin walaw a'jabatkum wala tunkihu al-mush'rikina hatta yu'minu wala'abdun mu'minun khayrun min mush'rikin walaw a'jabakum ulaika yad'una ila al-nari wal-lahu yad'u ila al-janati wal-maghfirati bi-idh'nihi wayubayyinu ayatihi lilnnasi la'allahum yatadhakkaruna