What is the title of the extraordinary Mughal painting from the early period, probably Abd us Samad, in opaque watercolour on cotton?

Princes of the House of Timur

Answer- Princes of the House of Timur (1545–50)

When we look at an extraordinary Mughal painting from the early period, Princes of the House of Timur (1545–50), probably by Safavid artist, Abd us Samad, in opaque watercolour on cotton, we are surprised by its size and complex structure and display of historical portraits. A prized possession of the imperial family, it has portraits that were painted over the original to register the portraits of successive members of the Mughal dynasty. So, visible in their physical likeness are portraits of Akbar, Jahangir and Shah Jahan painted subsequently over those painted during the reign of Humayun.