The easiest way is to start from a small concentration and and try physically dissolving them start from the least possible concentration and then gradually increase like 5 to 10 fold. Like 0.1 to 1%  to 5 to 10 % 

Some products are not easily soluble, this way sometimes is better to put both solid and liquid in contact at least 24 hours under agitation, if possible. After filtration, you can perform a qualitative analysis in the liquid phase to detect the presence of the solid in the liquid. If ok, do a quantitative analysis.

PS. : Solubility depends on temperature, so the best is to thermostatize the system.

What do you mean by 'drug related to Ayurveda medicine'? These are usually complex plant extracts. Basing on the knowledge of their chemical composition, you may predict, whether all compounds will dissolve. E.G. I had a problem with dissolving aqueous extract, rich in polysaccharides in DMSO, even in small conc.

Please place a small amount of the drug in a desiccator under a saturated atmosphere of the solvent. Place the solvent at the bottom of the desiccator.If it goes to liquid in a few hours partially or totally it means that  undergoes solvation , you will need a considerable amount of the drug to determine the solubility. If no changes are observed, prepare a saturated solution to ensure that the solid is in equilibrium with the solution. This is the way to determine the solubility. Leave it in a thermostat for a few days because the process in some cases can be kinetically slow. See papers in the literature by Danil de Namor and co-workers or the volumes of  the Solubility Data Series published by the Solubility Commission of IUPAC.