Musnad Ahmad 1156:172

'Abd al-Razzaq narrated to us, Ma'mar narrated to us, from al-Zuhri, from Hind bint al-Harith, from Umm Salamah, who said: "When the Messenger of Allah (peace and blessings of Allah be upon him) would say the taslim, he would remain for a little while." And they used to think that this was so that the women could depart before the men.