Posted every second day…

April 27

Now the Siyyid Báb had disposed all His affairs before setting out from Chihríq towards Tabríz, had placed His writings and even His ring and pen-case in a specially prepared box, put the key of the box in an envelope, and sent it by means of Mullá Báqir, who was one of His first associates, to Mullá ‘Abdu’l-Karím of Qazvín. This trust Mullá Báqir delivered over to Mullá ‘Abdu’l-Karím at Qum in presence of a numerous company. At the solicitations of those present he opened the lid of the box and said, “I am commanded to convey this trust to Bahá’u’lláh: more than this ask not of me, for I cannot tell you.” Importuned by the company, he produced a long epistle in blue, penned in the most graceful manner with the utmost delicacy and firmness in a beautiful minute shikastih hand, written in the shape of a man so closely that it would have been imagined that it was a single wash of ink on the paper. When they had read this epistle [they perceived that] He had produced three hundred and sixty derivatives from the word Bahá. Then Mullá ‘Abdu’l-Karím conveyed the trust to its destination. 
(‘Abdu’l-Baha, ‘A Traveler’s Narrative’)