Abu Hurairah reported,

The Prophet ﷺ said, "Whoever has two wives and inclines toward one of them will come on the Day of Resurrection with one side of his body sagging."

Azami 12227

Sahih

عن أبي هريرة

عن النبي ﷺ قال: من كانت له امرأتان، فمال إلى إحداهما، جاء يوم القيامة وشقه مائل.

الأعظمي 12227صحيح
Contents
Reference
Commentary
Ayat
Collection
Jami al-Kamil
Book
Tafsir of the great Quran
Chapter
Virtues of Surah Baqarah
Section
His saying, "And you will never be able to be equal between wives even if you should strive, so do not incline completely and leave another hanging. And if you amend and fear Allah, then indeed Allah is ever Forgiving and Merciful"
Numbering
Jami al-Kamil 12227 (2nd edition)
Azami 12227