Charak Samhita
अपाने विगुणे पूर्वं, समाने मध्यभोजनम् । व्याने तु प्रातरशितमुदाने भोजनोत्तरम् ॥२९९॥
॥ Relation between time of administration and type of vitiated vata dosha॥ In vitiation of apana vayu medicines must be consumed before food , in vitiation of samana vayu food must be consumed in between meals, in vyana ॥ ॥ vayu॥ ॥vitiation early morning medication is advised and in udana vayu vitiation medicine is advised after meals.
english translation
apAne viguNe pUrvaM, samAne madhyabhojanam । vyAne tu prAtarazitamudAne bhojanottaram ॥299॥
hk transliteration by Sanscript