We were walking in the prison of Akka, detached from what hath been created in the world of being and speaking forth in praise of the King of Names. Whereupon You commanded me to praise You with that which fulfilled the testimony of God to all others besides Him and manifested His proof to those in the heavens and the earth. When the irresistible summons came from the Eternal King, my limbs quaked for fear of God, the Help in Peril, the Almighty, the Most Powerful, the All-Knowing. I began to weep in such wise that all created things wailed and the daysprings of names cried out–this on account of the people I saw opposing him through whom the scriptures and tablets were adorned.
Baha’u’llah, April 1874, to Shams al-`Ulama in Nishapur
O Lord! At the time of revelation, you see my pen moving and my limbs trembling.
Baha’u’llah in a prayer for `Abdu’l-Baha
Both passages are quoted by Vahid Rafati in Kayfiyyat nuzul vahy, 14.