Phenila (फेनिल) refers to the “foamy” (e.g., water), as mentioned in verse 5.6-8 of the Aṣṭāṅgahṛdayasaṃhitā (Sūtrasthāna) by Vāgbhaṭa.-Accordingly, “ Not shall one drink (water that is) : foamy, infested with insects, warm, (and) injurious to the teeth because of excessive cold nor celestial (water) that (is) unseasonable nor (celestial water) that (is) seasonable (but) the first (of the season), (such water) one shall not drink”. Phenila in Ayurveda glossary Source: : Vagbhata’s Ashtanga Hridaya Samhita (first 5 chapters)
