Sushruta Samhita
उष्णानि स्वादुतिक्तानि वातप्रशमनानि च । तेषु पौनर्नवं शाकं विशेषाच्छोफनाशनम् ॥२५५॥
Warm, sweet, and bitter-tasting (vegetables) that alleviate Vata are included. Among them, Punarnava is specifically mentioned as beneficial for swelling.
english translation
उष्ण, स्वादु, और तिक्त रस वाले शाक जो वात को शान्त करने वाले हैं, उनमें विशेष रूप से पुनर्नवा शाक को शोफ नाशक माना गया है।
hindi translation
uSNAni svAdutiktAni vAtaprazamanAni ca । teSu paunarnavaM zAkaM vizeSAcchophanAzanam ॥255॥
hk transliteration by Sanscript