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Qurʾān Bukhārī Muslim Nasāʾī Abū Dāwūd Tirmidhī Ibn Mājah Mālik Aḥmad Dārimī Ḥākim Ibn Ḥibbān Ṭabarānī Nasāʾī's Kubrá Bayhaqī al-Luʾluʾ wa-al-Marjān Ibn Rajab's Fifty Riyāḍ al-Ṣāliḥīn Aḥmad's Zuhd Suyūṭī
nasai-kubra:7192 – Hannād b. al-Sarī > ʿAbd al-Salām > Ibn Ḥarb > Hishām > al-Ḥasan > Salamah b. al-Muḥabbaq

the case of a man who had intercourse with the slave woman of his wife was referred to the Messenger of Allah ﷺ, and he did not stipulate any legal punishment for him. (Using translation from Ibn Mājah 2552)  

الكبرى للنسائي:٧١٩٢ – أَخْبَرَنَا هَنَّادُ بْنُ السَّرِيِّ عَنْ عَبْدِ السَّلَامِ هُوَ ابْنُ حَرْبٍ قَالَ حَدَّثَنَا هِشَامٌ عَنِ الْحَسَنِ عَنْ سَلَمَةَ بْنِ الْمُحَبَّقِ

«أَنَّ رَسُولَ اللهِ ﷺ رُفِعَ إِلَيْهِ رَجُلٌ وَطِئَ جَارِيَةَ امْرَأَتِهِ فَلَمْ يُحِدَّهُ»  

See similar narrations below:

Collected by Ibn Mājah
ibnmajah:2552 – Abū Bakr b. Abū Shaybah > ʿAbd al-Salām b. Ḥarb > Hishām b. Ḥassān > al-Ḥasan > Salamah b. al-Muḥabbiq

the case of a man who had intercourse with the slave woman of his wife was referred to the Messenger of Allah ﷺ, and he did not stipulate any legal punishment for him.  

ابن ماجة:٢٥٥٢ – حَدَّثَنَا أَبُو بَكْرِ بْنُ أَبِي شَيْبَةَ حَدَّثَنَا عَبْدُ السَّلاَمِ بْنُ حَرْبٍ عَنْ هِشَامِ بْنِ حَسَّانَ عَنِ الْحَسَنِ عَنْ سَلَمَةَ بْنِ الْمُحَبِّقِ

أَنَّ رَسُولَ اللَّهِ ﷺ رُفِعَ إِلَيْهِ رَجُلٌ وَطِئَ جَارِيَةَ امْرَأَتِهِ فَلَمْ يَحُدَّهُ