Astanga Hrudaya
बृंहणो लङ्घनश्चेति तत्पर्यायावुदाहृतौ। बृंहणं यद्बृहत्वाय लङ्घनं लाघवाय यत्॥२॥
2. Apartarpana –depleting, cleansing. It is also called as Langhana (fasting, losing weight, imparting lightness etc).
english translation
bRMhaNo laGghanazceti tatparyAyAvudAhRtau। bRMhaNaM yadbRhatvAya laGghanaM lAghavAya yat॥2॥
hk transliteration by Sanscript