Astanga Hrudaya
अत्युद्रिक्ते बलासे तु लेखनीयेऽथवा गदे। काममह्य्नपि नात्युष्णे तीक्ष्णमक्ष्णि प्रयोजयेत्॥२०॥
In condition of extreme increase of Kapha or in diseases which require Lekhana Anjana – scraping type, Teekshna Anjana – strong type, can be put into the eyes even during day time, if desired, only if the day is not very hot
english translation
atyudrikte balAse tu lekhanIye'thavA gade। kAmamahynapi nAtyuSNe tIkSNamakSNi prayojayet॥20॥
hk transliteration by Sanscript