तनादिकृञ्भ्य उः
SV: तनादि-कृञ्-भ्यः उः
AV: सार्वधातुके कर्तरि
Language Meaning: A verb belonging to the तनादिगण gets the विकरणप्रत्यय ‘उ’ in presence of a सार्वधातुक प्रत्यय in कर्तरि प्रयोग.

Literal Meaning:
that pull upto roll inward hand held superior surface steady join - outward hard