Astanga Hrudaya
तुला पलशतं, तानि विंशतिर्भार उच्यते। हिमवद्विन्ध्यशैलाभ्यां प्रायो व्याप्ता वसुन्धरा॥२९॥ सौम्यं पथ्यं च तत्राद्यमाग्नेयं वैन्ध्यमौषधम्। २९ १/२।
100 Pala make 1 Tula, and 20 Tula are designated as 1 Bhara. Ideal earth for herb collection, spans between Vindhya mountains and Himalayas. For cold potency and congenial herbs, Himalaya is suitable, for herbs of hot potency, Vindhya mountains is ideal place for herb collection.
english translation
tulA palazataM, tAni viMzatirbhAra ucyate। himavadvindhyazailAbhyAM prAyo vyAptA vasundharA॥29॥ saumyaM pathyaM ca tatrAdyamAgneyaM vaindhyamauSadham। 29 1/2।
hk transliteration by Sanscript