https://www.eislamicbook.com/shah-waliullah-aur-unka-falsafa-by-maulana-ubaidullah-sindhi-%d8%b4%d8%a7%db%81-%d9%88%d9%84%db%8c-%d8%a7%d9%84%d9%84%db%81-%d8%a7%d9%88%d8%b1-%d8%a7%d9%86-%da%a9%d8%a7-%d9%81%d9%84%d8%b3%d9%81%db%81/