Astanga Hrudaya
अभ्यासात्प्राप्यते दृष्टिः कर्मसिद्धिप्रकाशिनी। रत्नादिसदसज्ज्ञानं न शास्त्रादेव जायते॥५६॥
Knowledge of successful treatment is obtained from constant practice just as knowledge of determining the quality of gems is obtained only from- knowing the science.
english translation
abhyAsAtprApyate dRSTiH karmasiddhiprakAzinI। ratnAdisadasajjJAnaM na zAstrAdeva jAyate॥56॥
hk transliteration by Sanscript