Regarding the Allamah, Qadi Nurullah Shustari has in thebook of Majalisul Mo-mineen and other scholars have narrated this
incident that a learned person, whose student the Allamah was in some arts, had
prepared a book in refutation of the Shia and he often read out from it in
gatherings; but fearing its refutation he did not give it to anyone. The
Allamah tried much to obtain it, but he did not succeed. So much so that he
made his discipleship as a means of borrowing that book from the teacher, which
the latter was too ashamed to refuse and was compelled to give the book, but
with the condition that he will not keep it for more than one night. The
Allamah thought that even that much was enough and he brought the book home, to
copy it as much as possible. He continued writing till half the night passed.
He felt drowsy and went to sleep. He saw Hazrat Hujjat (a.s.) in dream that he
was saying: Give me the book and you can continue to sleep. When he awoke, he
saw that by the miracle of the Imam the whole book was copied. And some people
have mentioned that it was such a bulky volume that leave alone one night, a
person could not inscribe it even in a year. When the Allamah started writing a
person in the form of a native of Hijaz entered the door, greeted and after
taking his seat, said: Shaykh, you prepare the pages and I will write. Thus, he
began writing and the Allamah continued to prepare the pages; but the operation
was performed in such a way that he was writing faster than the Allamah can
turn the pages. The book was complete by dawn. It is mentioned in Safinatul Behaar
that after this incident in some gatherings the Allamah clearly mentioned
that the person who came was Hazrat Hujjat (a.s.).