वैयाकरण सिद्धान्त कौमुदी (भट्टोजि दीक्षित - बालमनोरमा व तत्त्वबोधिनी टीका सम्पूर्ण पूर्वार्ध)

(पटु + ङीष्), if 'ओर्गुणः' applies, what happens? 'ओर्गुणः' applies before a taddhita! If ङीष् were a taddhita... wait, "तद्धितः" अधिकार! If the अधिकार of "तद्धितः" was placed BEFORE टाप् (i.e. if ङीप्, ङीष्, ङीन्, टाप् etc. were taddhitas), then in 'पट्वी' (पटु + ङीष्), because ङीष् is a taddhita, 'ओर्गुणः' (which applies before a taddhita!) would cause guna of उ to ओ, yielding *पटोी instead of यणादेश (पट्वी)! YES! Brilliant! "पट्वी इत्यादौ ओर्गुणः इति गुणापत्तिः"! Look at that word in line 32: Is that 'पट्वी'? Let's look at the characters: प (pa) ट (ta) ्वी (vii with subscript va and ee-kar): Wait! The letter is 'ट्वी'! Because ट with subscript व looks very much like द्ध! It is 'ट्वी'! So the word is: ‘ पट्वी ’! Let's re-verify: "टापः प्रागेतदधिकारकरणे तु ‘ पट्वी ’ इत्यादौ ‘ ओर्गुणः ’ इति गुणापत्तिरिति भावः ॥" That is