In which verses Allah has said about Hazrat Ali (a.s) giving zakaat in the state of Rukuh. And also the Shan e Nazool of Surah Kausar with reference or tafseer.

You can find your answers in these lectures

https://youtu.be/h5duIZcTvvg
https://youtu.be/9N3e7Fhv2fU
https://youtu.be/9N3e7Fhv2fU
https://youtu.be/1SbhCF8eIYY