Agha Muhammad has narrated that a Sunni from Samarrah,
named Mustafa Al-Hamud was in the train of the servants to take
care of the pilgrims, but he was always causing them distress and
accosting money from them through every trick. And most of the
time he was in the holy cellar at the small platform, which is
behind the window of Nasir Abbasi and he knew most of the
recitations by heart and whoever enters that holy place and starts
reciting the Ziyarat, that wicked man diverts his attention from
Ziyarat.
One night he saw His Eminence Hujjat (a.s.) in dream
telling him: Till when will you continue to harass my pilgrims
and not leave them to recite the Ziyarat? What interference do
you have in this? Let them recite what they like.
He woke up in a state that both his ears were deaf.
After that, he heard nothing and pilgrims became free from his mischief until he joined his predecessors
Behaarul Anwaar, vol. 53, pp. 274-275