Musannaf Ibn Abi Shayba 1:971

971. Ibn ‘Ulayyah narrated to us, from Sulayman al-Taymi, from Abu ‘Uthman al-Nahdi, that Sulayman ibn Rabi‘ah married a woman from Banu ‘Uqayl. He saw her and played with her. He said: Then there came out from him that which comes out from a man. Sulayman said: Or he said, "the madhy (pre-seminal fluid)." He said: So I performed ghusl (full ablution), then I came to ‘Umar. He said: "There is no ghusl upon you for that; that is easier."