Musannaf Ibn Abi Shayba 19:587

Abu Bakr narrated to us, he said: Abd al-Rahim ibn Sulayman narrated to us, from Abd al-Malik, from Ata, regarding a man who said to another man, "You do not approach your wife except unlawfully." He said: "He has lied; there is no prescribed punishment (hadd) upon him."