Ali separated between a slave-girl and her child. The Prophet ﷺ prohibited it and made the sale transactions withdrawn. Abu Dawud said: The narrator Maimun (b. Abi Shaib) did not meet 'Ali. He (Maimun) was killed in the battle of Jamajim in 83 A.H. Abu Dawud said: The battle of Harrah took place in 63 A.H., and Ibn al-Zubair was killed in 73 A.H.  

أَنَّهُ فَرَّقَ بَيْنَ جَارِيَةٍ وَوَلَدِهَا فَنَهَاهُ النَّبِيُّ ﷺ عَنْ ذَلِكَ وَرَدَّ الْبَيْعَ