Here's why:
* Abdul is a common Arabic name that is often used in Bengali as well. It would be spelled আব্দুল (Abdol).
* Manan is also an Arabic name. While it's not as common in Bengali, it can be transliterated as মানান (Manan).
Therefore, you would likely see the name written as আব্দুল মানান (Abdol Manan) in Bengali. However, depending on the specific context and the pronunciation, there might be slight variations in the transliteration.