This computation is based on the guidance of Shoghi Effendi, conveyed in a letter written on his behalf, which states "one miṯẖqál consists of nineteen náḵẖuds. The weight of twenty-four náḵẖuds equals four and three-fifths grammes. Calculations may be made on this basis." The miṯẖqál traditionally used in the Middle East had consisted of 24 náḵẖuds but in the Bayán this was changed to 19 náḵẖuds and Bahá’u’lláh confirmed this as the size of the miṯẖqál referred to in the Bahá’í laws (Q and A 23). Náḵẖud A unit of weight. See "miṯẖqál". Qayyúmu’l-Asmá The Báb’s commentary on the Súrih of Joseph in the Qur’án. Revealed in 1844, this work is characterized by Bahá’u’lláh as "the first, the greatest, and mightiest of all books" in the Bábí Dispensation. Shoghi Effendi Shoghi Effendi (1897-1957), Guardian of the Bahá’í Faith from 1921-1957. He was the eldest grandson of ‘Abdu’l-Bahá and was appointed by Him as the Head of the Faith. Síyáh-C̱ẖál Literally "the Black Pit". The dark, foul-smelling, subterranean dungeon in Ṭihrán where Bahá’u’lláh was imprisoned for four months in 1852. FOOTNOTES 1 Napoleon III 2 Ṭihrán 3 Ḵẖurásán 4 The Báb 5 The Báb’s 6 Bahá’u’lláh 7 The Báb 8 The Báb 9 Bahá’u’lláh 10 Kirmán 11 The Báb 12 Bahá’u’lláh 13 First month of the Islamic lunar calendar 14 In Arabic the two verses differ in gender 15 This relates to the minimum duration of a journey which exempts the traveller from fasting 16 The vernal equinox in the northern hemisphere 17 The Tablet containing the three Obligatory Prayers now in use 18 Qur’án 2:115 19 This refers to a volume of approximately one half of a cubic metre 20 Colour, taste and smell 21 Adrianople 22 The method of dividing the estate is to be applied in cases of intestacy. See item o. in this section