Hasten now to ‘Ishqábád, in the utmost detachment and aflame with the fire of attraction, and convey to the friends of God ardent greetings from ‘Abdu’l-Bahá. Kiss thou each one’s face and express this servant’s deep and sincere affection to all. Do thou on behalf of ‘Abdu’l-Bahá move the earth, carry the mortar, and haul the stones for the building of the Mashriqu’l-Adhkár so that the rapture of this service may bring joy and gladness to the Centre of Servitude. That Mashriqu’l-Adhkár is the first visible and manifest establishment of the Lord. Therefore, it is this servant’s hope that each and every virtuous and righteous soul will sacrifice his all, evince great happiness and exultation, and rejoice in carrying the earth and mortar so that this Divine Edifice may be raised, the Cause of God may spread, and in every corner of the world the friends may arise with the utmost resolve to accomplish this great task. Were ‘Abdu’l-Bahá not imprisoned and were there not obstacles in his path, he himself would assuredly hasten to ‘Ishqábád and carry the earth for the building of the Mashriqu’l-Adhkár with the utmost joy and gladness. It behoveth the friends now to arise with this intention in mind and serve in my place so that in a short time this Edifice may be revealed to all eyes, the loved ones of God may engage in making mention of the Abhá Beauty, the melodies of the Mashriqu’l-Adhkár may rise at dawntide to the Concourse on high, and the songs of the nightingales of God may bring joy and ecstasy to the denizens of the All-Glorious Realm. Thus will the hearts rejoice, the souls delight in joyful tidings, and the minds be illumined. This is the highest hope of the sincere ones; this is the dearest wish of them that are nigh unto God.
— 'Abdu'l-Bahá, In a letter from the Universal House of Justice dated 1 August 2014