Looks like a frond of pteridophyte.

Yes it seems a Pteridophyte.

Dear Mr. Rishad

Do you have photos of the opposite side of your samples? In the fig 2, there are fronds of fern beneath your sample. But I am confused about your sample. If you have photos of other side, pl add and it will help  in identification of your sample. You can consult the book, Ferns of British India by Bedome (pl check spell !!!).

Dear Sir,

Here is the opposite site of the sample

May be Dipteris wallichi

http://www.plantillustrations.org/illustration.php?id_illustration=47260&SID=1o5cdl4hg1bsk6gt7ifbe6ti93&mobile=0

The habit is of a Pteridophyte but am not sure as well.  I would like to know when you get the identification confirmed.

Dipteris wallichii (R. Br.) T. Moore is correct.

https://powo.science.kew.org/taxon/urn:lsid:ipni.org:names:17089580-1

Please check the picture.