Benefit: Marrying an additional wife does not mean the first is less loved!

Narrated Abu Hurairah (may Allah be pleased with him): The Prophet ﷺ said: "It is not allowed for a woman to ask for the divorce of her sister (co-wife) in order to empty her plate, for she will only have what has been decreed for her." [Al-Bukhari (5152) & Muslim (1408)] Ibn Abdil Barr rahimahullah said in his commentary: "This hadith teaches that a woman should not ask her husband to divorce her co-wife, as it neither increases nor decreases anything decreed for her by Allah." [At-Tamheed (18/165)]