Pir Budhan Shah[note 1] (died 1643;[1] پیر بدھن علی شاہ), also called Baba Budhan Ali Shah, Peer Baba, and Sayyed Shamsuddin,[2][3][4] was a venerated Sufi pir[5] who held a religious discourse with Guru Nanak in Rawalpindi and later accepted Gurmat thought during the times of Guru Hargobind.

Furthermore, there is no clear knowledge about his history, which is not documented in any scholarly books, unlike other prominent Muslim figures such as Hazrat Khawaja Gareeb Nawaz Chisti and Nizamuddin Auliya.

This raises questions about claims that Baba Budhan Shah was a Muslim who converted to Sikhism.

[3] Buddan Shah, a Muhammedan,[8] belonged to a family of chieftains, but left everything to become a Sufi mystic.

[12] His disciple, Sunder Shah, died together with Bidhi Chand at Devnagar near Ayodhya on the banks of the Gomti River in 1638.