Muwatta Malik, Book 18, Hadith 654 (In-Book) ⓘ
Yahya related to me from Malik from Nafi that Abdullah ibn Umar used to forbid kissing and fondling for people who were fasting.
وَحَدَّثَنِي عَنْ مَالِكٍ، عَنْ نَافِعٍ، أَنَّ عَبْدَ اللَّهِ بْنَ عُمَرَ، كَانَ يَنْهَى عَنِ الْقُبْلَةِ، وَالْمُبَاشَرَةِ، لِلصَّائِمِ .
also referenced under: Book 18, Hadith 20 (USC-MSA)