The new mausoleum of Khoja Ahmad Yasawi and the territory adjoining it were transformed into a place of burials for representatives of the ruling houses and the elite. 60 m from the main portal of Khoja Ahmad a beautiful mausoleum was built for the wife of the khan Abu'l-Khayr (1429–1468) – Rabi'a Sultan Begim, who passed away in 1485. Within the mausoleum of Khoja Ahmad Yasawi, in the qazandyq , was the gravestone of Aman Bika (now situated in Small Ak Saray), on which was carved the following inscription: "This is the tomb of the forgiven, pardoned (by God), pious, chaste Aman Bika Khanim, the daughter of Janibek-khan, the son of Barak-khan. "Died on the date of the month of Radjab 925/June–July 1519". This means that the daughter of one of the founders of the Kazakh khanate Janibek was buried here.