Azerbaijan is the place where Khalwatiyya is born. The first Khalwatiyya Sufis are Azerbaijanis: Pir Omar Avakhili Shirvani. Akhi Mirim Melhami Shirvani. Izzaddin Turkmani Shirvani. https://www.roneverhart.com/Whirlwind-Direct-2-Direct-Box-p14308/