Hadithcore
Musnad Ahmad 3872
sahih

It was narrated from Abdur-Rahman bin al-Aswad, from his father, that Ibn Mas'ood (رضي الله عنه) told him that

The Messenger of Allah (ﷺ) usually departed, after the prayer, to the left, towards the apartments of his wives.

References1 variant
Arabic/English book
Book 26, Hadith 3872