Zeinab Kobra (as) says: whenever my father used to call Imam Hussein (as), first, he would stand up, and he didn't use to call him by his first name, but he would say: " O Aba Abdullah"
source : erfan.ir
Zeinab Kobra (as) says: whenever my father used to call Imam Hussein (as), first, he would stand up, and he didn't use to call him by his first name, but he would say: " O Aba Abdullah"