كتاب عشرة النساء
Read the English translation first, with the original Arabic directly underneath.
It was narrated from Abu Hurairah that the Prophet (ﷺ) said:
"Whoever has two wives and is inclined to favor one of them over the other, he will come on the Day of Resurrection with half of his body leaning."
مَنْ كَانَ لَهُ امْرَأَتَانِ يَمِيلُ لإِحْدَاهُمَا عَلَى الأُخْرَى جَاءَ يَوْمَ الْقِيَامَةِ أَحَدُ شِقَّيْهِ مَائِلٌ