Muwatta Malik · Hadith 651
وَحَدَّثَنِي عَنْ مَالِكٍ، عَنْ نَافِعٍ، أَنَّ عَبْدَ اللَّهِ بْنَ عُمَرَ، كَانَ يَنْهَى عَنِ الْقُبْلَةِ، وَالْمُبَاشَرَةِ، لِلصَّائِمِ .
Yahya related to me from Malik from Nafi that Abdullah ibn Umar used to forbid kissing and fondling for people who were fasting
Sahih · Salim al-Hilali