Summary of Islamic Fiqh Part (4): This book explains the Mu'amalah fiqh which includes the following: Buying and Selling Khiyar (Choosing), Salam (Orders), Usury, Loans, Pawns, Guarantees, Hiwalah, (Transfer of debt) , Peace, Hajr (boycott), Wakalah (representative), Fellowship, Musaqat and muzara'ah, Rental, Sabaq (competition), Borrowing the Spoils, Syuf'ah and syafa'ah, Entrustment, Opening new land, Ju'alah (wages ), Luqathah (found items) and laqith (the one who finds) Waqaf, Gifts and alms, Testament, Liberation.