अन्नपूर्णे सदापूर्णे शङ्करप्राणवल्लभे।
ज्ञान-वैराग्य-सिद्धयर्थं भिक्षां देहि च पार्वति।।
Annapurna devi not only gives the food that sustains the body but also the ambrosia of jnana that nourishes the soul. It is this bhiksha that Shankara asks for in this verse.
Annapurna Stotram (Verse 11)