Note: this is a weak Hadith. It's been classified as weak by Al-Albani see here. If you come across an Islamophobe asking you to explain it, tell them it is weak.
A man from the Ansar called Basrah said:
I married a virgin woman in her veil. When I entered upon her, I found her pregnant. (I mentioned this to the Prophet). The Prophet (ﷺ) said: She will get the dower, for you made her vagina lawful for you. The child will be your slave. When she has begotten (a child), flog her (according to the version of al-Hasan). The version of Ibn AbusSari has: You people, flog her, or said: inflict hard punishment on him.
Abu Dawud said: This tradition has been transmitted by Qatadah from Sa'd b. Yazid on the authority of Ibn al-Musayyab in a similar way. This tradition has been narrated by Yahya b. Abi Kathir from Yazid b. Nu'aim from Sa'id b. al-Musayyab, and 'Ata al-Khurasani narrated it from Sa'id b. al-Musayyab ; they all narrated this tradition from the Prophet (ﷺ) omitting the link of the Companion (i.e. a mursal tradition). The version of Yahya b. Abi Kathir has: Basrah b. Aktham married a woman. The agreed version has: He made the child his servant.
Although it's weak, there some explanation of the statement "the child will be your slave":
The meaning of " take the born child as your slave" has been explained by al-khattabi who said, " I know no scholar who disgaree with the freedom of the child who came through adultery when the mother is free woman. Thus, the meaning of this statement , if this narration is proven authentic, that the prophet wanted him to look after the child and raise him well so and in return the child will serve hi like a slave due to his goodness and kindness towards him".
See here for more discussion and explanation of this weak hadith here:
http://www.ahlalhdeeth.com/vbe/archive/index.php/t-11618.html
What is Isnad in Hadith Studies
Islamophobes: Think Before you Quote from Tareekh al Tabari
Explanation: Sun Sets in Murky Water Hadith (Sunan Abu Dawud, Musnad Ahmad)
False Stories About Prophet Muhammad - By Ehteshaam Gulam
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Although it's weak, there some explanation of the statement "the child will be your slave":
The meaning of " take the born child as your slave" has been explained by al-khattabi who said, " I know no scholar who disgaree with the freedom of the child who came through adultery when the mother is free woman. Thus, the meaning of this statement , if this narration is proven authentic, that the prophet wanted him to look after the child and raise him well so and in return the child will serve hi like a slave due to his goodness and kindness towards him".
See here for more discussion and explanation of this weak hadith here:
http://www.ahlalhdeeth.com/vbe/archive/index.php/t-11618.html
What is Isnad in Hadith Studies
Islamophobes: Think Before you Quote from Tareekh al Tabari
Explanation: Sun Sets in Murky Water Hadith (Sunan Abu Dawud, Musnad Ahmad)
False Stories About Prophet Muhammad - By Ehteshaam Gulam
Did Prophet Muhammad Say "Love of the homeland is part of faith"
Why Islam
