The mad attempt and the immediate horrendous consequences: - it “stirred the indignation of the entire body of the ecclesiastical order of Persia”

So grave a menace to their sovereign and to the institutions of his realm stirred the indignation of the entire body of the ecclesiastical order of Persia. To them so bold a deed called for immediate and condign punishment. Measures of unprecedented severity, they clamoured, should be undertaken to stem the tide that was engulfing both the government and the Faith of Islám. Despite the restraint which the followers of the Báb had exercised ever since the inception of the Faith in every part of the land; despite the repeated charges of the chief disciples to their brethren enjoining them to refrain from acts of violence, to obey their government loyally, and to disclaim any intention of a holy war, their enemies persevered in their deliberate efforts to misrepresent the nature and purpose of that Faith to the authorities. Now that an act of such momentous consequences had been committed, what accusations would not these same enemies be prompted to attribute to the Cause with which those guilty of the crime had been associated! The moment seemed to have come when they could at last awaken the rulers of the country to the necessity of extirpating as speedily as possible a heresy which seemed to threaten the very foundations of the State. 

- Nabil  (‘The Dawn-Breakers’, translated and edited by Shoghi Effendi)

The mad attempt and the immediate horrendous consequences: - “the outbreak of a series of persecutions and massacres of such barbarous ferocity as could be compared only to the atrocities of Mázindarán and Zanján”

That act, though committed by wild and feeble-minded fanatics, and in spite of its being from the very first emphatically condemned by no less responsible a person than Bahá’u’lláh, was the signal for the outbreak of a series of persecutions and massacres of such barbarous ferocity as could be compared only to the atrocities of Mázindarán and Zanján. The storm to which that act gave rise plunged the whole of Ṭihrán into consternation and distress. It involved the life of the leading companions who had survived the calamities to which their Faith had been so cruelly and repeatedly subjected. That storm was still raging when Bahá’u’lláh, with some of His ablest lieutenants, was plunged into a filthy, dark, and fever-stricken dungeon, whilst chains of such weight as only notorious criminals were condemned to carry, were placed upon His neck. For no less than four months He bore the burden, and such was the intensity of His suffering that the marks of that cruelty remained imprinted upon His body all the days of His life. 

- Nabil  (‘The Dawn-Breakers’, translated and edited by Shoghi Effendi)

The impact of this assault on the whole of Niyavaran

The whole of Níyávarán where the imperial court and troops had congregated was, as a result of this assault, plunged into an unimaginable tumult. The ministers of the state, headed by Mírzá Áqá Khán-i-Núrí, the I‘timádu’d-Dawlih, the successor of the Amír-Niẓám, rushed horror-stricken to the side of their wounded sovereign. The fanfare of the trumpets, the rolling of the drums and the shrill piping of the fifes summoned the hosts of His Imperial Majesty on all sides. The Sháh’s attendants, some on horseback, others on foot, poured into the palace grounds. Pandemonium reigned in which every one issued orders, none listened, none obeyed, nor understood anything. Ardishír Mírzá, the governor of Ṭihrán, having in the meantime already ordered his troops to patrol the deserted streets of the capital, barred the gates of the citadel as well as of the city, charged his batteries and feverishly dispatched a messenger to ascertain the veracity of the wild rumors that were circulating amongst the populace, and to ask for special instructions. 

- Shoghi Effendi  (‘God Passes By’)