Professor Ansarian: the best way of reaching to the highest spiritual positions

One day, I was in the holy shrine of Hadhrat Masoumeh and I asked Allameh Tabataba'i: the best way of reaching to the highest spiritual positions?

Allameh Tabataba'i thought for a minute and then said: Sincerity in monotheism; in other words, you need to empty yourself from anything but Allah and the other thing is to have relationship with Imam Hussein(peace be upon him);