The same system was pursued in Persia, where sultan Sanjar, the son of Malek Shah, had united under his sceptre the greater part of the dominions of his father and Fakhr-al-Moolk (_Fame of the Realm_). The son and successor of Nizam-al-Moolk and Chakar Beg, the great uncle of the sultan, perished by the daggers of the emissaries of Hassan Sabah. Sultan Sanjar was himself on his march, intending to lay siege to Alamoot, and the other strong-holds of the Ismaïlites, when one morning, on awaking, he found a dagger struck in the ground close to his pillow. The sultan was dismayed, but he concealed his terror, and a few days afterwards there came a brief note from Alamoot, containing these words: "Were we not well affected towards the sultan, the dagger had been struck in his bosom, not in the ground." Sanjar recollected that his brother Mohammed, who had laid siege to the castles of Lamseer and Alamoot, had died suddenly just as they were on the point of surrendering--an event so opportune for the society, that it was but natural to ascribe it to their agency--and he deemed it the safest course to proceed gently with such dangerous opponents. He accordingly hearkened to proposals of peace, which was concluded on the following conditions: 1. That the Ismaïlites should add no new works to their castles; 2. That they should purchase no arms or military machines; 3. That they should make no more proselytes. The sultan, on his part, released the Ismaïlites from all tolls and taxes in the district of Kirdkoh, and assigned them a part of the revenue of the territory of Komis by way of annual pension. To apprehend clearly what the power of the society was, we must recollect that sultan Sanjar was the most powerful monarch of the East, that his mandate was obeyed from Cashgar to Antioch, from the Caspian to the Straits of Bab-el-Mandeb.