Charak Samhita
स्वबुद्ध्यैवं सहस्राणि कोटीर्वाऽपि प्रकल्पयेत्। बहुद्रव्यविकल्पत्वाद्योगसङ्ख्या न विद्यते॥५०॥
Such thousands or crores of combination can be planned & prepared by the wise physician with his own intellect and experience. There is no limit for framing new formulations as there exists a wide scope for multidrug combinations.
english translation
svabuddhyaivaM sahasrANi koTIrvA'pi prakalpayet। bahudravyavikalpatvAdyogasaGkhyA na vidyate॥50॥
hk transliteration by Sanscript