Astanga Hrudaya
वर्त्याऽग्रे पिहितं, मूले यथास्वं ह्यङ्गुलान्तरम्। कर्णिकाद्वितयं नेत्रे कुर्यात्तत्र च योजयेत्॥१५॥
ridge should be made at a distance of two Angula- towards its tip, the orifice at the tip should be kept closed- with a plug of cloth.
english translation
vartyA'gre pihitaM, mUle yathAsvaM hyaGgulAntaram। karNikAdvitayaM netre kuryAttatra ca yojayet॥15॥
hk transliteration by Sanscript