سُنَنُ ابْنِ مَاجَهْ
Sunan Ibn Majah 2006
The Chapters on Marriage
The child is for the bed and the fornicator gets nothing
حَدَّثَنَا هِشَامُ بْنُ عَمَّارٍ، حَدَّثَنَا سُفْيَانُ بْنُ عُيَيْنَةَ، عَنِ الزُّهْرِيِّ، عَنْ سَعِيدِ بْنِ الْمُسَيَّبِ، عَنْ أَبِي هُرَيْرَةَ، أَنَّ النَّبِيَّ ـ صلى الله عليه وسلم ـ قَالَ الْوَلَدُ لِلْفِرَاشِ . وَلِلْعَاهِرِ الْحَجَرُ .
It was narrated from Abu Hurairah that: the Prophet (ﷺ) said: "The child is for the bed (i.e., belongs to the husband) and the fornicator gets nothing!'
Sunan Ibn Majah, 2006Sahih (Darussalam)