Abu Dawud transmitted on the authority of Ka'b bin Murrah (RAA), "The Messenger of Allah (ﷺ) said:
"Any Muslim woman, who emancipates another Muslim woman, she will be her release from Hell Fire." (ES)
English reference (ES): Book 15, Hadith 1464 (ES)
Arabic reference (ES): Book 15, Hadith 1420 (ES)