Some claim that it houses the tomb of an attendant of a Mughal noble and was buried during the reign of Jahangir.

Khan was an attendant of Abdul Rahim Khan-I-Khana and died in 1626, during the reign of Mughal emperor Jahangir.

Naqvi of the Archaeological Survey of India opines that this building was built even before the Humayun's Tomb.

His conjecture is based on the fact that the enclosure wall of the Humayun's Tomb contains a gateway to this building.

[1] The mausoleum is located 50 yards (46 m) away from the eastern wall of the enclosure of the Humayun's Tomb.

[2] Since 2019, the Nila gumbad has been made accessible and people can visit it using the same ticket for the Humayuns Tomb complex.

There is no mihrab (a niche in a wall indicating the direction in which Muslims pray) inside the building.

The sotiff of the dome contains an arabesque design made using blue and red coloured tiles.