O Shaykh! My Pen is abashed to recount what actually took place. In the land of Sád (Iṣfáhán) the fire of tyranny burned with such a hot flame that every fair-minded person groaned aloud. By thy life! The cities of knowledge and of understanding wept with such a weeping that the souls of the pious and of the God-fearing were melted. The twin shining lights, Ḥasan and Ḥusayn (The King of Martyrs and the Beloved of Martyrs) offered up spontaneously their lives in that city. Neither fortune, nor wealth, nor glory, could deter them! God knoweth the things which befell them and yet the people are, for the most part, unaware!
Bahá'u'lláh