19 mithqáls of gold
The payment of Ḥuqúqu’lláh is based on the calculation of the value of the individual’s possessions. If a person has possessions equal in value to at least nineteen mithqáls of gold (Q&A 8), it is a spiritual obligation to pay nineteen percent of the total amount, once only, as Ḥuqúqu’lláh (Q&A 89). Thereafter, whenever one’s income, after all expenses have been paid, increases the value of one’s possessions by the amount of at least nineteen mithqáls of gold, one is to pay nineteen percent of this increase, and so on for each further increase (Q&A 8, 90).
A mithqál is a unit of weight. The weight of the traditional mithqál used in the Middle East is equivalent to 24 nakhuds. However, the mithqál used by the Bahá’ís consists of 19 nakhuds, “in accordance with the specification of the Bayán” (Q&A 23). The weight of nine of these mithqál equals 32.775 grams or 1.05374 troy ounces.