[1][2] The tribe predominantly adheres to the Shafi'i school with many Naqshbandi and Qadiriyya followers.

[8][9] They are the biggest Kurdish tribe in the Middle East with approximately 4 million people[10] and they speak Babani Sorani.

[2] The Jaff tribe lives in the following cities and towns: Helebce, Kelar, Silêmanî, Ravansar, Sine, Ciwanrro, Selas-bawecanî, Kirmaşan, Xaneqîn.

[2][1][13] The West began ties with the Jaff tribe during World War I, when Ely Bannister Soane established contact.

After the war, the tribe opposed Sheikh Mahmud Barzanji, as well as Great Britain's failure to grant Kurdish autonomy in Iraq.