Wadhee'ah

Sale at a loss.

Wadi'ah

contract of deposit; bailment.

Waijdb / Wajib

Compulsory, obligation as distinguished from wujub (duty).

Wakalah 'ammah

general agency.

Wakalah khassah

special agency.

Wakalah qasirah

restricted agency.

Wakalah

agency.

Wakil

agent.

Wali

guardian.

Waqf

Endowment. A charitable trust in the name of Allah, usually  in perpetuity, and usually for the purposes of establishing the Deen of Islam, teaching useful knowledge, feeding the poor or treating  the sick.

Wasiyah

Will (according to Islamic law a person cannot bequeath more than one third of his total inheri­tance nor can he bequeath in favour of his heirs).

Wilayah

guardianship.

Wilayat al-istidanah

authority granted by one partner to another to buy on credit beyond the limit of the capital of the partnership.