Q: Can I leave the masjid during ittikaf to get dinner or change my clothes?
A: Ittikaf is invalidated by leaving the masjid without excuse or even intending to leave even if you do not.
It is not invalidated for leaving the masjid to use the restroom, bring food, attend Jumuʿah (which is required), or perform some obligatory purification, etc.
Source: Bidayat al-Abid
Q: Is it permissible to fast on the days of Tashriq especially if it is a day that I normally fast such as a Monday, Thursday, or the "white days" etc.? A: Fasting, be it voluntary or obligatory e.g.
Q: Is it permissible to make up missed days of Ramadan during the 10 days of Dhul-Hijjah or the first 10 days of al-Muharram? What about Ashura, etc.? A: The 10 days of Dhul-Hijjah are days of worship
Q: What is the ruling of fasting the entire month of Sha’ban? A: There are numerous ḥadīth that demonstrate the virtue of abundant fasting in the month of Sha’ban. Fasting the month, in its entirety,