Sayyiduna Abdullah bin Zam'ah (may Allah be pleased with him) says that the Messenger of Allah (peace and blessings be upon him) said: "You beat your wife the way a slave is beaten, and then you have intercourse with her at the end of the day."
(b) Sufyan bin Uyaynah (may Allah have mercy on him) says that the Prophet (peace and blessings be upon him) admonished the people concerning women and said: "One of you beats his wife the way a slave is beaten, and then has intercourse with her at the end of the day."
Hadith Referenceالسنن الكبرى للبيهقي / كتاب القسم والنشوز / 14780