Thou hadst made reference in thy letter to agriculture. On this matter He hath laid down the following universal rule: that it is incumbent upon everyone, even should he be resident in a particular land for no more than a single day, to become engaged in some craft or trade, or agriculture, and that the very pursuit of such a calling is, in the eyes of the one true God, identical with worship. This rule was exemplified by the Bahá'í community at the time when they were facing exile from 'Iraq, for, while they were making arrangements for their journey, they occupied themselves in cultivating the land; and when they set out, instructions were given for the fruits of their labours to be distributed amongst the friends. (Baha’u’llah, from a Tablet to an individual believer, translated from the Persian; The Compilation of Compilations, vol. III, Economics, Agriculture, and Related Subjects)