The now solitary traveller succeeded, at the last moment, in getting the brave bishop Mar Yusuf to be his companion.
The Emir had now broken his treaty with the Sultan, formed two years before in the hope of immediate aid to subdue the Nestorians; and had sworn perpetual allegiance to the Shah, who promised him support against the Sultan.

Dr.Grant found Yahya Khan and the Emir at the castle of Charreh, on the summit of an isolated rock near the river of the same name.

The tents of more than a dozen chiefs dotted the green banks of the stream.

Nurullah Bey still professed to regard Dr.Grant as his physician and friend, and in the presence of the Khan promised to protect him and his associates, and permit them to erect buildings in Tiary for themselves and their schools.
The Khan, to whose friendly agency with the Emir Dr.Grant was specially indebted, had a good reputation for integrity.

He was a Persian subject, then governor of Salmas, and also chief of a branch of the Hakary tribe.