The Later Saffarids of Sijistan were a dynasty clinging to a shrinking corner of political legitimacy — nominal rulers under Ghuzz Turkish overlords who had devastated Khorasan after breaking free of Seljuk control in the 1150s. Taj al-Din Harb's long tenure, stretching nearly five decades, is less a sign of dynastic strength than of his particular usefulness to successive outside powers. Sijistan's relative geographic isolation, bordering the Dasht-e Margo desert, gave the Saffarid remnant just enough insulation to survive where more exposed dynasties did not.
The Later Saffarids of Sijistan were a dynasty clinging to a shrinking corner of political legitimacy — nominal rulers under Ghuzz Turkish overlords who had devastated Khorasan after breaking free of Seljuk control in the 1150s. Taj al-Din Harb's long tenure, stretching nearly five decades, is less a sign of dynastic strength than of his particular usefulness to successive outside powers. Sijistan's relative geographic isolation, bordering the Dasht-e Margo desert, gave the Saffarid remnant just enough insulation to survive where more exposed dynasties did not.