تحفة النظار في غرايب الامصار وعجايب الاسفار 13.34.7

13.34.7

I returned to the capital and occupied myself with building my house, and spent four thousand dinars on it, of which I was given six hundred dinars from the dīwān and added the rest myself; and I built a mosque opposite it. I occupied myself with organising the mausoleum of Sultan Quṭb al-Dīn. The Sultan had ordered that a dome be built over it rising a hundred cubits into the air, twenty cubits more than the height of the dome built over Qāzān, king of Iraq, and ordered that thirty villages be bought as an endowment for it; he placed it in my hands on condition that I should have a tenth of its revenue, according to custom.