Musannaf Ibn Abi Shaybah 14056 — A man who says he is in ihram

Al-Hakam said: If a person says, "The day I do such and such, on that day I am in ihram for Hajj," and then he breaks the oath, he will be counted as being in ihram for Hajj on that day. And if he says, "If I do not do such and such, I will be in ihram for Hajj," then if, after breaking the oath, he performs Hajj along with the people, it will suffice for him.