Re: Laal Shahbaz Qalandar
I think he was able to write in Pashto as it is spoken in many areas of Afghanistan (even today). Otherwise, his ancestors migrated from Baghdad (Iraq) to Mashahd (Iran), thanks to Mongols.
Interestingly, Shahbaz Qalandar is not popular as a poet in Sindh as he didn’t write in Sindhi ( or probably it has not been recorded in earlier found sources of Sindhi Poetry). Many peoples don’t know whether he was a poet and those who know, don’t remember any lines from his poetry.