Ayatollah Ali Sistani undergone surgery Thursday after he suffered a fracture to his left thigh bone, a statement from his office said.
In a tweet on Arabic, Zarif expressed content about the result of the cleric's surgery and asked God for his good health.
Larijani, on a phone conversation with the head of Ayatollah Sistani's office in Tehran, also hoped for his health.
"Ayatollah Ali Sistani had an incidental strain to his left leg which resulted in a fracture to his thigh bone and he will undergo surgery today," the statement read.
The surgery was performed "under the supervision of an Iraqi medical team, the statement added.
MNA/4827547