Wisdom of Allah SWT in the Rituals of Hajj

Some explanations on the rituals of Hajj from Imam Ali ar-Ridha (as) - (Part of a letter written from the Imam to Muhammad bin Sanan) - The reason for Hajj - Why the Ka'aba was chosen - The name of the city Makkah - The reason for doing tawaf - The significance of Hajar al-Aswad - The meaning of the word Mina