Hadiqat-ul Haqiqah (the book of Walled Garden of Truth), composed by Hakim Abul-Majd Majdud ibn Adam Sana' i Ghaznavi (died around 1131), is one of the most famous mystic books. Sana' i, in order to leave impression on his reader, uses interrogative sentences in this work. The present article tries, by studying 20 percent of 25000 verses, tries to show the uses of interrogative sentences in the moods of denying, forbidding, reprimanding, blaming, amazing, desiring.