Also added was a stone with a foot print of Muhammad, which Hazrat syed Jalaluddin husain Bukhari alias hz Makhdoom jahanian jahangasht the spiritual guide of Firuz Shah had brought in from Mecca.
Furthermore, the madrasa and mosque at the tomb are still actively used, and the foot print is an important pilgrimage site.
The complex is located just northwest of the New Delhi Railway Station in a dense "urban jungle."
Nearby (and barely noticeable as a U-shaped building) are the remains of one of the glorious Seven Mosques of Firoz Shah's Wazir Khan-i-Jahan Maqbul Tilangani (Khan Jahan).
On a side note, Firuz Shah Tughlaq's final resting place was in a new tomb in Hauz Khas.