Ayurveda is known to be the upaveda of Atharvaveda and Rigveda. However, being traditional medical system the knowledge of Ayurveda is offered by ancient sages and seers in classical treatises. These treatises offer Ayurveda knowledge in systematic manner. This knowledge has been offered in an structured, standardised and organized manner in various samhitas that are developed by strictly following the guidelines of developing Shastra samhitas or tantras on various topics. Ancient Ayurveda scholars have followed these rules and provided guidelines for a student to select the appropriate Shastra before starting the learning process. This is described as 'Shastra pariksha' in Vimanasthanam of Charaka samhita. Although these qualities are described as desired qualities for a treatise on Ayurveda or medical science, most of these are applicable to the samhitas on other shastras also. <blockquote>बुद्धिमानात्मनःकार्यगुरुलाघवंकर्मफलमनुबन्धंदेशकालौचविदित्वायुक्तिदर्शनाद्भिषग्बुभूषुःशास्त्रमेवादितःपरीक्षेत| (Char. Samh. 8.3)</blockquote>The desired qualities to look for in a treatise are as follows,
+
Ayurveda is known to be the upaveda of Atharvaveda and Rigveda. However, being traditional medical system, the knowledge of Ayurveda is offered by ancient sages and seers in classical treatises as a shastra. These treatises offer Ayurveda knowledge in systematic manner. This knowledge has been offered in a structured, standardized and organized manner in various samhitas that are developed by strictly following the guidelines of developing Shastra samhitas or tantras of various topics. Ancient Ayurveda scholars have followed these rules and provided guidelines for a student to select the appropriate Shastra before starting the learning process. This is described as a 'Shastra pariksha' in Vimanasthanam of Charaka samhita. Although these qualities are described as desired qualities for a treatise on Ayurveda or medical science, most of these are applicable to the samhitas on other shastras also. <blockquote>बुद्धिमानात्मनःकार्यगुरुलाघवंकर्मफलमनुबन्धंदेशकालौचविदित्वायुक्तिदर्शनाद्भिषग्बुभूषुःशास्त्रमेवादितःपरीक्षेत| (Char. Samh. 8.3) <ref>Charaka Samhita ([http://niimh.nic.in/ebooks/ecaraka/?mod=read Vimanasthanam Adhyaya 8 Sutra 3])</ref></blockquote><blockquote>buddhimānātmanaḥkāryagurulāghavaṁkarmaphalamanubandhaṁdeśakālaucaviditvāyuktidarśanādbhiṣagbubhūṣuḥśāstramevāditaḥparīkṣeta| </blockquote>The desired qualities to look for in a treatise are as follows,
# सुमहत् : comprehensive providing all information
# सुमहत् : comprehensive providing all information
# यशस्विधीरपुरुषासेवितम् : successful, followed by prominent and wise men(successful practitioners)
# यशस्विधीरपुरुषासेवितम् : successful, followed by prominent and wise men(successful practitioners)