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 Umarused to forbid kissing and fondling for people who were fasting . Translation Not Available

Book Ref: Muwatta Imam Malik Book 18 Hadith 654
Web Ref:  Muwatta Imam Malik Book 18 Hadith 20