Persian entry calls for entering authors under compound surnames, starting with the first surname element present. References should be made for all other surnames in the entry element.
t.p. form: Mahdi al-Husayni al-Hairi al-Kashani
100 20 Husayni al-Hairi al-Kashani, Mahdi
400 20 Hairi al-Kashani, Mahdi al-Husayni
400 10 Kashani, Mahdi al-Husayni al-Hairi