February 5. On this date in 1918, Shaykh Kázim-i-Samandar, the author of Tárikh-i-Samandar, died. Born into a prominent Bahá'í family of Qazvin of Bábí and Shaykhi background, Shoghi Effendi identified him as one of the nineteen Apostles of Bahá'u'lláh. His daughter Thurayyá Khánum was married to Bahá’u’lláh’s son Mírzá Díyá’u’lláh. Because they sided with Muhammad 'Alí in his argument with 'Abdu'l-Bahá, both Thurayyá and Díyá'u'lláh were declared Covenant-breakers.

February 5. On this date in 1918, Shaykh Kázim-i-Samandar, the author of Tárikh-i-Samandar, died. Born into a prominent Bahá'í family of Qazvin of Bábí and Shaykhi background, Shoghi Effendi identified him as one of the nineteen Apostles of Bahá'u'lláh. His daughter Thurayyá Khánum was married to Bahá’u’lláh’s son Mírzá Díyá’u’lláh. Because they sided with Muhammad 'Alí in his argument with 'Abdu'l-Bahá, both Thurayyá and Díyá'u'lláh were declared Covenant-breakers.

Díyá'u'lláh, the second son of Bahá'u'lláh through his second wife Fatimih (also known as Mahd-i-'Ulya), was born on August 15, 1864, in Edirne. Díyá'u'lláh married Thurayyá Samandarí, the daughter of Káẓim-i-Samandar (author of Tárikh-i-Samandar and one of the nineteen Apostles of Bahá'u'lláh to whom was addressed the Lawh-i Fu'ád) and sister of Ṭaráẓu’lláh Samandarí (who was appointed a Hand of the Cause of God by Shoghi Effendi in 1951).

Becuase they sided with Muhammad 'Alí in his argument with 'Abdu'l-Bahá, both Thurayyá and Díyá'u'lláh were declared Covenant-breakers. After his death in 1898, Díyá'u'lláh had initially been buried next to his father at the Shrine of Bahá'u'lláh at the Mansion of Bahjí. However, having been declared a Covenant-breaker, Díyá'u'lláh's remains were disinterred in 1965 in a process the Universal House of Justice described as a "purification... from past contamination."