Sahih
Muslim
صحيح مسلم
13
The Book of Fasting
كتاب الصيام
Chapter 12: Clarifying that Kissing when fasting is not unlawful for the one whose desire is not provoked by that
باب بَيَانِ أَنَّ الْقُبْلَةَ فِي الصَّوْمِ لَيْسَتْ مُحَرَّمَةً عَلَى مَنْ لَمْ تُحَرِّكْ شَهْوَتَهُ
Sahih Muslim 1106 h
It is further narrated on the authority of Aswad and Masruq that they went to the Mother of the Believers and they asked her (and the rest of the hadith is the same)
وَحَدَّثَنِيهِ يَعْقُوبُ الدَّوْرَقِيُّ، حَدَّثَنَا إِسْمَاعِيلُ، عَنِ ابْنِ عَوْنٍ، عَنْ إِبْرَاهِيمَ، عَنِ الأَسْوَدِ، وَمَسْرُوقٍ أَنَّهُمَا دَخَلاَ عَلَى أُمِّ الْمُؤْمِنِينَ يَسْأَلاَنِهَا . فَذَكَرَ نَحْوَهُ .
Grade: Sahih