Astanga Hrudaya
स हि भूरितरं दोषं चूर्णत्वादपकर्षति। प्रदेशिन्यङ्गुलीपर्वद्वयान्मग्नसमुद्धृतात्॥९॥
having opening at both its end. It pulls out the greatly imbalanced Doshas because it is in the form of powder. Nasya Matra – quantity of nasal drops:- The amount of liquid that drops after immersing two digits of the index finger in any liquid and taking the finger out forms one bindu- 1 drop.
english translation
sa hi bhUritaraM doSaM cUrNatvAdapakarSati। pradezinyaGgulIparvadvayAnmagnasamuddhRtAt॥9॥
hk transliteration by Sanscript