The taqiyah (also spelled tagiya; Arabic: طاقية / ALA-LC: ṭāqīyah) is a short, rounded skullcap. They are often worn for religious purposes; for example, Muslims believe that Muhammad used to keep his head covered, therefore making it mustahabb (i.e., it is commendable to cover the head in order to emulate him). Muslims often wear them during the five daily prayers.
When worn by itself, the taqiyah can be any colour. However, particularly in Arab countries, when worn under the keffiyeh headscarf, they are kept in a traditional white. Some Muslims wrap a turban around the cap, called an amamah in Arabic, which is often done by Shia and Sufi Muslims. In the United States and Britain taqiyas are usually referred to as "kufis".
Topi is a type of taqiyah cap that is worn in India, Bangladesh, Pakistan, and other regions of South Asia. Many different types of topi caps include the Sindhi cap, worn in Sindh, and the crochet topi that is often worn at Muslim prayer services (see salat).
The topi cap is often worn with salwar kameez, which is the national costume of Pakistan.
Taqiyah is the Arabic word for a Muslim skullcap which is derived from (Persian: طاق), means a "dome". This concept is taken from the Jewish traditions as the cap kippah (Hebrew: כיפה) literally means a "dome" (Arabic: قُبَّة Qubba) as well, and whoever wears this dome acknowledges the constant divine presence that covers them. In the Indian subcontinent, it is called a topi (Hindi: टोपी Urdu: ٹوپی Bengali: টুপি, translit. tupi) which means hat or cap in general. In Pakistan and Bangladesh, men usually wear the topi with kurta (panjabi in Bangladesh) and paijama. In the United States and Britain, many Muslim merchants sell the prayer cap under the name kufi. Sephardic Jews adopted the Bukharan from the Kufi (See Bukharan).