Toghril led his army into Sistan and on 10 November 1051 appeared suddenly at Taq and invested the citadel there  The Later Ghaznavids CE Bosworth p44   

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Toghril led his army into Sistan and on 10 November 1051 appeared suddenly at Taq and invested the citadel there  The Later Ghaznavids CE Bosworth p44   

