It is reported that ‘Â`ishah — said, “Umm Habibah called for me on her deathbed and said,
There used to occur between us the kinds of things that happen between co-wives (al-dara`ir), so may Allah forgive me and you those things.’ I said, ‘May Allah forgive you all those things and release you from [all liability] for that.’ She replied, ‘You have made me happy, may Allah make you happy.’ And she sent for Umm Salamah and said the same things to her.”

Al-Dhahabi, Siyar A’lam Al-Nubala` Vol. 2 p223.