The Surat al-Qadir (Surah of the Omnipotent) is an Arabic epistle of Baha'-Allāh most probably addressed to a Bābī entitled al-Qadir. It is oriented around the theme of the theophany, significance and human manifestation of the Name of God, the Omnipotent (al-qadir). It contains what seems one of the earliest expressions of Baha'-Allah's dissatisfaction with the inadequate leadership role of his half-brother Mirza Yahya Nuri, Subh-i Azal (c. 1834-1914). This Tablet most likely dates to the early-mid Edirne (Adrianople) period (c. 1865-6?).