What is itikaf?

Seclusion (itikaf) is staying in the mosque for worship and withdrawal from distractions. It is best known in the last ten nights of Ramadan.

Seclusion is mentioned in Surat al-Baqara, and the Prophet ﷺ kept seclusion in the last ten nights until he died ^{1 2}. The entry on seclusion sets out its form and timing, and it is linked to fasting and the month of Ramadan.