The First and Second Disengagement

Question: What is meant by the first and second disengagement?

Answer: The first disengagement is intended when one performs two out of three: if one stoned the pillars and shaved or shortened the hair, or stoned the pillars and performed tawaf and sa'y if sa'y was required of him, or performed tawaf and sa'y and shaved or shortened the hair, this is the first disengagement.
And if one performs the three: stoning the pillars, tawaf, and sa'y if sa'y was required of him, and shaving or shortening the hair, this is the second disengagement. If one performs only two, he may wear sewn clothes and use perfume, and everything that was forbidden to him by ihram becomes permissible to him except for sexual intercourse. If he performs the third, sexual intercourse becomes permissible to him.
Some scholars held the view that if one stoned the pillar on the day of Eid, he achieves the first disengagement, and this is a good opinion. If a person does so, there is no blame on him, if Allah wills. However, the better and more cautious course is not to hasten until he performs a second act after it, such as shaving or shortening the hair, or adding to it tawaf and sa'y if sa'y was required of him. This is based on the hadith of A'ishah—and although there is a consideration regarding its chain of narration—that the Prophet (peace and blessings be upon him) said: And other hadiths came in this chapter. Also, when the Prophet (peace and blessings be upon him) stoned the pillar on the day of Eid, sacrificed his hady, and shaved, A'ishah applied perfume to him. The apparent meaning of the text is that he did not use perfume until after he had stoned, sacrificed, and shaved. Therefore, the best and most cautious course is not to perform the first disengagement until after he has stoned and until he has shaved or shortened the hair. If it is also facilitated that he sacrifices the hady after stoning and before shaving, that is better, and it combines the hadiths.