“O Messenger of Allah! What will remove the responsibility of the foster relationship from me?” So he said: “A Ghurrah: a male slave or a female slave.” (Using translation from Tirmidhī 1153)
أَنَّهُ سَأَلَ النَّبِيَّ ﷺ مَا يُذْهِبُ عَنِّي مَذَمَّةَ الرَّضَاعِ؟ فَقَالَ النَّبِيُّ ﷺ «غُرَّةٌ عَبْدٌ أَوْ أَمَةٌ»