Khan-i-Jahan Tilangani was the Prime minister of Firoz Shah. His tomb is the first octagonal tomb to be built in Delhi. Thus, it is of much historical and architectural significance, even though it is not a royal tomb. It is similar(but not identical) to the Dome of the Rock in Jerusalem and Qubbat-i-Sulaibiya in Samarra. This tomb became an inspiration for the later Sayyid and Lodi tombs.[7][8][9]

Malik Maqbul (Nagaya Ganna, also referred to as Khan-i-Jahan Maqbul Tilangani and Jahan Khan was a commander in the Kakatiya Empire, who rose to become the Wazir of the Delhi Sultanate under Firuz Shah Tughluq (1351–1388). Malik Maqbul, born Nagaya Ganna, was a commander of the Kakatiya Empire under Prataparudra (r. 1289–1323). Marana's Markandeya Puranamu (in Telugu) names him as "Nagaya Ganna Vibhudu" and describes him as the commander (Kataka paludu) of Warangal Fort, the capital of Kakatiyas. The term Vibhudu (meaning "Lord") implies that he was very high up in the hierarchy. After Ghiyasuddin Tughluq's son and general Ulugh Khan (Muhammad bin Tughluq) captured Warangal in 1323, Ulugh Khan himself took over the Governorship of what is now a new province of "Teling" (Telangana) in the Sultanate. Nagaya Ganna was converted to Islam and named Malik Maqbul. When Ulugh Khan left for Delhi soon afterward, he left Warangal in charge of Malik Maqbul, who became its new governor. Ulugh Khan succeeded Ghiyasuddin Tughlaq as the new Sultan of Delhi under the name Muhammad bin Tughluq. Malik Maqbul was initially made the governor of Multan and sent to administer Punjab. After his return to Delhi, Maqbul earned the trust of Tughlaq. By making himself indispensable in the Delhi durbar (court), he became the finance minister and finally, the Wazir, of the Delhi Sultanate under Feroz Shah Tughlaq.[ Firoz Shah gave an undertaking that Maqbul's son will inherit the position of Wazir. After the death of Maqbul in 1369 CE, his son Jauna Khan became the Wazir.