(tenfold of investigation) according to Acharya Charaka - An ancient method of research.

Research follows a scientific way of establishing facts. All those methods which are used by the researcher during the course of studying the research problem are termed as research methods. The scientific method implies an objective, logical, and systematic method. Research is an organized endeavor. Like any other organized work, research requires proper planning, that systematizes the research work. It eliminates aimless intellectual wandering. Database of knowledge creation and its classification gives a definite structure to any literature. However, it needs a proper research methodology, without which the structure is incomplete. Ayurveda experts have followed certain research methods and methodology. The traditionally established truths need to be validated in scientific manner. Validation of ancient methods of investigation or research will ultimately lead to establishment of Ayurveda as a science which will contribute to broad domain of Indian research methodology. The critical scientific approach of Ayurveda is evident from various ancient methods. Proper planning before performance of any task is always advised by authoritative persons. Acharya Charaka has given , i.e. tenfold of investigation which are necessary for accomplishment of task without intellectual wandering. The desired objectives can be achieved if proper planning is done beforehand. This study is an attempt to establish the applicability of , i.e. tenfold of investigation in planning of research mentioned in Charaka Samhita.