Verse 3

وَإِنْ خِفْتُمْ أَلَّا تُقْسِطُوا۟ فِى ٱلْيَتَـٰمَىٰ فَٱنكِحُوا۟ مَا طَابَ لَكُم مِّنَ ٱلنِّسَآءِ مَثْنَىٰ وَثُلَـٰثَ وَرُبَـٰعَ فَإِنْ خِفْتُمْ أَلَّا تَعْدِلُوا۟ فَوَٰحِدَةً أَوْ مَا مَلَكَتْ أَيْمَـٰنُكُمْ ذَٰلِكَ أَدْنَىٰٓ أَلَّا تَعُولُوا۟

And if you fear that you may not be equitable towards the fatherless, then you shall marry from the women, those who are pleasing to you, two, three or four. However, if you fear that you may not be able to maintain equality, then continue with one or whatever you already have. It is better that you do not have too many wives.