What is the ruling on entering the state of ihram for Hajj before the months of Hajj?

Question:
Is the dislike of entering the state of ihram for Hajj before the months of Hajj a disliked act (makruh) in the sense of being discouraged?

Answer:
The most likely view, and Allah knows best, is this; because it is from the Sunnah. He did not say, "Do not do it." He said, "It is from the Sunnah," meaning the Sunnah of the Prophet (peace and blessings be upon him).
Q: But what about exceeding the specified months of Hajj?
A: The most likely view, and Allah knows best, is that it is disliked. If one enters the state of ihram for Hajj before the time of Hajj, it is disliked, and he should make it an 'Umrah. Likewise, if one enters the state of ihram for Hajj or 'Umrah before the miqat, he has done what he should not have done.
Q: He has done what he should not have done, but does he commit a sin?
A: Allah knows best. The most likely view is that he does not commit a sin, but he has gone against the Sunnah.