6.4.146
ओर्गुणः
Operational rule vidhi
An उवर्णान्त भसंज्ञक undergoes a गुणादेश when followed by a तद्धितप्रत्यय.
Word by word (padaccheda)
Target ओः ṣaṣṭhī · ekavacanaSubstitute / term prathamā · ekavacana
- Target Ṣaṣṭhī (6th case): names what gets replaced, "in place of X" (1.1.49 षष्ठी स्थानेयोगा).
- Substitute / term Prathamā (1st case): in operational rules, the substitute or the thing introduced; in definitions, the term or its referent.
Dotted words are technical terms. Hover or tap one to see its card.
Full reading
ओः
Pāṇini leaves out words that carry over from earlier sūtras. Expand to see the rule as a reader actually understands it.
ओः →
Replace oḥ with guṇaḥ. Inherited words (anuvṛtti) may add further conditions.
Commentary
For उ of ऊ of a भ अङ्ग (stem) there is substituted गुण before a तद्धित affix.
Thus बाभ्रव्यः from बभ्रू, माण्डव्यः from मण्डु, शङ्कव्यं दारु (from शंकु), पिचव्यः कार्पासः, (from पिचु) कमण्डलव्या मृत्तिका (from कमण्डलू), परशव्यमयः, औपगवः, कापटवः &c. Instead of making the sutra simpler by saying ओरोत् 'let ओ be substituted for उ or ऊ', the employment of the technical phrase गुणः in the aphorism indicates the existence of the following maxim संज्ञा पूर्वको विधिरनित्यः "A rule is not universally valid, when that which is taught in it, is denoted by a technical term". The present sutra is, therefore, anitya, and we have forms like स्वायंभुवः from स्वयंभू without guna. See 7.4.30 also.
Śrīśa Chandra Vasu, The Ashtadhyayi of Panini (1897), via ashtadhyayi.com.