Paradoxical Sajid is a series of books on Islam written by Bangladeshi author Arif Azad. In it, the author tries to disprove the anti-Islamic questions through Islamic information, logic, philosophy, science and reality, and from there tries to prove the weakness of the opponent's argument.

How strong is faith? How unique can the melody of a believing soul be? Is it easy to measure faith on the scales of reason? How much can the unbeliever be given a cool touch of faith with a touch of magic? Argument is liberation or liberation in the argument of faith? The answers can be found.

Table of contents of the book Paradoxical Sajid 1
- The faith of an unbeliever
- ‘Takadir vs. Independent Will’ - Is corruption corrupt here?
- Why doesn't the Creator take responsibility for the bad deeds?
- The distance of the creator from the void
- God seals their hearts. Is that really so?
- Kill the polytheists wherever you find them
- Who created the Creator?
- A communal verse and ..
- Does the Qur'an speak of the sun sinking under water?
- Eid is the sacrifice of Muslims and the unsolicited Matabbari of a Matabbar
- Is the Qur'an a book made by Muhammad (pbuh)?
- The story of relativity
- A Letter to David-Jesus wasn't myth and he exited ...
- The Qur'an, the sky, the roof and the lies of a person
- The marriage of Ayesha (R) and Muhammad (PBUH) and the whispers of the so-called sailors
- Is the Qur'an Muhammad's own words?
- If the Creator is merciful, then why hell?
- According to the Qur'an, is the earth flat or round?
- A DNA testimony
- Science in the Qur'an - coincidence or reality?
- Can the Creator create something that the Creator Himself cannot create?
- Satkahan of Velkivaji

Table of contents of the book Paradoxical Sajid-2
- Does the Qur'an say women's fields?
- A Reply to Christian Missionary
- Does Islam guarantee the rights of non-Muslims?
- The truth of the contradictions in the Qur'an
- The Banu Quraiza massacre is the story behind that incident
- Satanic Verses and the story of believing in Satan
- Behind the Prophet's multiple marriages
- Wine in paradise?
- Darwinism in the story
- Why the Quran in Arabic
- The sun will set
- Oceanography
- Let there be light
- The historical truth of Kaaba
- Newton's God
- Smaller than an atom