5.1.57
तदस्य परिमाणम्
Operational rule vidhi
The affixes taught in प्राग्वतेष्ठञ् (5.1.18) etc. have the sense of 'this is its measure'.
Word by word (padaccheda)
Substitute / term तत् prathamā · ekavacanaTarget अस्य ṣaṣṭhī · ekavacanaSubstitute / term परिमाणम् prathamā · ekavacana
- Substitute / term Prathamā (1st case): in operational rules, the substitute or the thing introduced; in definitions, the term or its referent.
- Target Ṣaṣṭhī (6th case): names what gets replaced, "in place of X" (1.1.49 षष्ठी स्थानेयोगा).
Dotted words are technical terms. Hover or tap one to see its card.
Full reading
तत् अस्य परिमाणम्
Pāṇini leaves out words that carry over from earlier sūtras. Expand to see the rule as a reader actually understands it.
अस्य → तत् परिमाणम्
Replace asya with tat parimāṇam. Inherited words (anuvṛtti) may add further conditions.
Commentary
The affixes taught in प्राग्वतेष्ठञ् 5.1.18 etc. have the sense of 'this is its measure'.
The word तद् shows that the word in construction should be in the nominative case. Thus प्रस्थः परिमाणमस्य = प्रास्थिको राशिः 'a heap whose mass is a Prastha.' So also खारीकः, शत्यः, शतिकः, साहस्रः, द्रौणिकः, कौडविकः, वार्षशतिकः, वार्षसहस्रिकः ॥ So also षष्ठिर्जीवित परिमाणमस्य षाष्ठिकः, द्विसाप्ततिकः ॥
Why the words तदस्य have been repeated in this sutra, when their anuvritti could have been drawn from the last aphorism, the word सोऽस्य and तदस्य being the same? The repetition shows that the affixes are again ordained, so that the elision taught in 5.1.28 does not apply. Thus द्वे षष्ठी परिमाणमस्य = द्विषाष्ठकः, द्विसाप्ततिकः, ॥ Here the affix is not elided by 5.1.28.
Śrīśa Chandra Vasu, The Ashtadhyayi of Panini (1897), via ashtadhyayi.com.