Guru Har Sahai in Ferozepur district was founded by and named for a Sodhi family descended from Guru Ram Das Ji through Prithi Chand.
The family held a manuscript known as the Guru Har Sahai pothi, claimed as a very early collection of hymns, possibly of Guru Nanak Dev Ji's own period, and a set of relics.
The pothi was reportedly stolen from a train in 1970 while being transported and has not been recovered. Photographs and partial descriptions exist.
That loss removed one of the three earliest Sikh manuscripts from the record, and it happened in living memory, in transit, without any institution having copied it first.
The town holds a gurdwara and the family's establishment and is otherwise a small tehsil town in a border district.
The lesson is the one repeated across this site: material that has survived four centuries can be lost in an afternoon, and the copy that should have been made was not.
Prithi Chand was Guru Arjan Dev Ji's elder brother, and the line descending from him kept its own establishment and its own manuscripts for centuries. Material held by a branch the mainstream rejected is exactly the material most likely to preserve an early state of a text, which is why the loss matters more and not less.
What is known about it comes from a handful of scholars who were allowed to look and from photographs of a small number of pages. Whether it was earlier than the Kartarpuri birh, and whether it carried compositions that never entered the volume, cannot now be settled in either direction.
The loss is total and it has not been investigated. One of the two or three most important manuscripts in the tradition went missing and there is no public account of what happened.