Musannaf Ibn Abi Shaybah 16874 — A man who marries a woman, declaring

Mansur said: I asked al-Hakam bin Utaybah: If a man fixes a dowry (mahr) of one thousand in secret and two thousand publicly, which will be taken into account? He said: What was stated in secret will be taken into account, because that is the truth, and the public statement will be void.