Al-Muʾayyad relates in his History (1) that in 441 AH the Byzantine emperor dispatched gifts and precious offerings to Tughril Beg and requested a truce. Tughril accepted, refurbished the Constantinople mosque (2), and arranged for the Friday sermon there to be delivered in his own name, by which his authority became firmly established.
He next besieged Isfahan and its ruler Ibn Kakwayh for eleven months, after which the city capitulated under a pledge of safety. Captivated by it, Tughril moved his treasuries from Rayy to Isfahan (3).
Once the realm lay securely in Tughril’s hands, he sought the hand of Caliph al-Qāʾim’s daughter. The caliph was distressed and asked to be excused, but his plea was not accepted, and he was compelled to give her in marriage to Tughril (4). The sultan then travelled to Baghdad for the wedding.
Al-Qāʾim in fact owed him a great favour, for Tughril had restored the caliphate to him and had cut off the pro-Fatimid khuṭbah instituted by al-Basāsirī (5).
Tughril subsequently sent one hundred thousand dinars to cover the transport of the bridal trousseau. The wedding was celebrated in Ṣafar of the year 455 AH. The bride was seated upon a gilded throne, and the sultan entered, kissed the ground before her, and did not lift the veil from her face. He presented magnificent gifts, performed the required courtesies, and withdrew. He then sent her two jewelled necklaces and an enormous ruby. The following day he entered again, kissed the ground, and sat upon a throne beside her.