THE
IRANIAN
WORLD
(A.D.
IOOO-I217)
132
uncertain, for it was believed
that
his sympathies inclined towards the
rebels. The sultan made peace with 'Abbas and received the custody of
Sulaiman-Shah, who was now consigned to imprisonment. When
Chavli
died, Toghan-Yiirek received what he had long coveted, the
governorship of Arran and Azarbaijan, and at the same time he was
made atabeg to Mas'ud's son Malik-Shah. Moreover the sultan was
compelled
to accept as his own vizier the personal vizier of
Boz-Aba,
Taj
al-Dln Ibn Darust, and Toghan-Yiirek directed all his efforts
towards bringing
Boz-Aba
back into favour at court.
1
In the west the spectacular successes of Zangi were continuing, and
from his Mosul base he was gradually mopping up the remaining
independent amirs of al-Jazireh and Diyarbakr, while also making war
on the Kurdish chiefs of the Hakkari region. Zangi had in his care a
Saljuq
prince, Sultan Mahmud's son Alp-Arslan, and was waiting to
place this candidate on the
throne
as soon as Mas'ud should die. In
538/1143-4
Mas'ud prepared a punitive expedition against Zangi,
regarding him as a source of persistent rebelliousness, but again he
was
bought off by the promise of a payment; even
then,
the sultan did
not exact the whole of the sum due, hoping
that
he could still conciliate
Zangi.
2
In central
Iraq
Baghdad was racked by 'iyara and the Mazyadid
'Ali
b. Dubais roused the local Arab population of the Hilla district
and wrested the capital from his
brother
Muhammad. He defeated an
army sent by the
shahna
of Baghdad, and, despite a brief occupation
by
Mas'ud's troops in
542/1147-8,
retook Hilla and remained in
possession of it.
3
The
death of Zangi in
541/1146
relieved the sultan of this source of
worry,
and in the same year he also succeeded in breaking out of the
iron grip of the Turkish amirs. He procured the assassination of
Toghan-Yiirek
at Ganja, and
that
of 'Abbas, who was
then
deputy-
chief
hajib, at the court in Baghdad.
4
In place of Toghan-Yiirek,
Khass
Beg Arslan b. Palang-Eri was appointed atabeg to Malik
Muhammad, while the obnoxious vizier Ibn Darust was sent back
to
Boz-Aba
in Fars.
Boz-Aba,
his position obviously weakened by
the elimination of his two great allies, now marched to Isfahan and
Hamadan, accompanied by the princes Muhammad and Malik-Shah,
1
Bundari, pp.
214-15;
£ahir al-DIn Nishapuri, pp. 58-62; Ravandi, pp. 232-7; Ibn
al-Jauzi, vol. x, pp. 116,
119;
Husaini, pp.
114-18;
Ibn al-Athir, vol. xi, pp. 69-9.
2
al-Kamil, vol. xi, pp. 61-2, 66-7.
3
Ibn al-Jauzi, vol. x, pp.
116,
125.
4
Zahlr al-DIn Nishapuri, pp. 62-3; Ravandi, pp. 237-9; Ibn al-Jauzi, vol. x, pp. 119,
123;
Husaini, pp.
118-19;
Ibn al-Athir, vol. xi, pp. 76-7; Sibt b. al-Jauzi, vol. 1, p. 193.