it is narrated from Nasir, the servant that he said:
“I heard Imam Hasan Askari (a.s.) speak with
his slaves in different tongues.”
Thus, I began to wonder that the master was born in Medina
and had not traveled anywhere; how he knew different tongues? His
Eminence turned to me and said:
“Almighty Allah has separated the rank of divine proofs
from everything and bestowed the cognition of
everything to him. So, the divine proof knows the
different languages, lineages and all events. If this were
not so, there would be no difference between the Divine
Proof and the common people.”
Isbaatul Wilayah (Part One) – Ayatullah AliNamazi Shahroodi (r.a.)