Question: 
Why did the Prophet, sallallaahu ‘alayhi wa sallam, observe fasting on the tenth of Muharram?
Answer: 
All perfect praise be to Allah, the Lord of the Worlds. I testify that there is none worthy of worship except Allah, and that Muhammad, sallallaahu ‘alayhi wa sallam, is His Slave and Messenger. 
The Messenger of Allah,.. 
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