Narrated Jabir (RA):

We used to sell our slave-women who had borne (our) children while the Prophet (ﷺ) was still living, and he saw no harm in that. [Reported by an-Nasa'i, Ibn Majah and ad-Daraqutni. Ibn Hibban graded it Sahih (authentic)].

وَعَنْ جَابِرٍ ‏- رضى الله عنه ‏- قَالَ: { كُنَّا نَبِيعُ سَرَارِيَنَا, أُمَّهَاتِ اَلْأَوْلَادِ, وَالنَّبِيُّ ‏- صلى الله عليه وسلم ‏-حَيٌّ, لَا نَرَى [1]‏ بِذَلِكَ بَأْسًا } رَوَاهُ النَّسَائِيُّ, وَابْنُ مَاجَهْ وَاَلدَّارَقُطْنِيُّ, وَصَحَّحَهُ اِبْنُ حِبَّانَ [2]‏ .‏