When does the i'tikaf (spiritual retreat in the mosque) of the last ten days of Ramadan end?

Question:
In the name of Allah, the Most Gracious, the Most Merciful. Praise be to Allah, and may peace and blessings be upon the Messenger of Allah. These are questions directed to our honorable Shaykh, our Shaykh, may Allah bless you. This questioner says: When does the period of i'tikaf end? Is it at the time of the 'Id prayer or at the dawn of the day of 'Id?

Answer:
This depends on the intention of the one performing i'tikaf. If he intends to perform i'tikaf for the last ten days of Ramadan, it ends when the new moon is confirmed, the new moon of Shawwal, at the setting of the sun on the night of 'Id, because the ten days have ended; they ended with the appearance of the new moon on the first night of the month of Shawwal. This is the end of i'tikaf for the one who intends to perform i'tikaf for the last ten days. However, if he intends to perform i'tikaf until the 'Id prayer, intending to enter the night of 'Id along with the last ten days, then he may do so, and he exits at the time of the 'Id prayer.