Which surah is known as Aroos-ul-Quran?

The time of Nafli Itekaf is

Who freed Hazrat Bilal (RA) from slavery?

Ziarat-e-Tawaf is

Who put circles for the first time in Quran-e-Pak?

A person who reads the Kalima of Islam verbally and calls himself Muslim, but disbelieves it heartily is called a

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