Musannaf Ibn Abi Shayba 1:1770

Hushaym narrated to us, from Abu Bishr, from Sa'id ibn Jubayr, from Ibn Abbas, who said: "Al-lams (touching), al-mass (touching), and al-mubasharah (physical contact) refer to sexual intercourse. However, Allah uses metaphors for whatever He wills, for whatever He wills."