[MOST WISHED] 40 Hadith on the Virtues of the Testament to Faith by Yusuf al-Nabahani
The text is a collection of 40 hadith that catalogues the blessings, benefits and virtues of Islamic testament to faith, i.e. the statement "la ilaha illa 'l-lah." This compilation is taken from a greater collection of hadith that are divided by topic - with each topic including 40 hadith on that particular subject.
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https://samsambur.blogspot.com/?book=099843809X