﴿ وَأَنكِحُوا۟ ٱلْأَيَٰمَىٰ مِنكُمْ وَٱلصَّٰلِحِينَ مِنْ عِبَادِكُمْ وَإِمَآئِكُمْ ۚ إِن يَكُونُوا۟ فُقَرَآءَ يُغْنِهِمُ ٱللَّهُ مِن فَضْلِهِۦ ۗ وَٱللَّهُ وَٰسِعٌ عَلِيمٌۭ ﴾

“AND [you ought to] marry the single from among you as well as such of your male and female slaves as are fit [for marriage]. If they [whom you intend to marry] are poor, [let this not deter you;] God will grant them sufficiency out of His bounty - for God is infinite [in His mercy], all-knowing.”

Please check ayah 24:34 for complete tafsir.