মুয়াত্তা ইমাম মালিক ৯৭

Yahya related to me from Malik that he had heard that Abdullah ibn Masud used to say, "Wudu is necessary if a man kisses his wife

Yahya related to me from Malik from Hisham ibn Urwa from his father from A'isha, umm al-muminin, that whenever the Messenger of Allah, may Allah bless him and grant him peace, did ghusl for major ritual impurity, he would begin by washing his hands, and then do wudu as for prayer. He would then put his fingers in the water and rub the roots of his hair with them. Then he would pour as much water as two hands can hold on to his head three times, and over the entire surface of his skin

Yahya related to me from Malik from Ibn Shihab from Salim ibn Abdullah that his father Abdullah ibn Umar used to say, "A man's kissing his wife and fondling her with his hands are part of intercourse. Someone who kisses his wife or fondles her with his hand must do wudu