मतौ च

Operational rule vidhi

The affix घ comes in the छन्दस् (Vedas) with the force of मतुप् after the word सहस्र.

Word by word (padaccheda)

Right context मतौ saptamī · ekavacanaIndeclinable च avyaya

Right context Saptamī (7th case): "when X follows", the operation applies to what precedes (1.1.66 तस्मिन्निति निर्दिष्टे पूर्वस्य). Also a condition or domain ("in the sense of").
Indeclinable An avyaya such as च "and", वा "optionally", न "not".

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Full reading

मतौ च

Pāṇini leaves out words that carry over from earlier sūtras. Expand to see the rule as a reader actually understands it.

Commentary

The affix घ comes in the छन्दस् (Vedas) with the force of मतुप् after the word सहस्र।
As सहस्रयस्य विद्यते = सहस्रियः ॥ This debars the मत्वर्थ affixes विनि and इनि and अण् of 5.2.102 and 5.2.103.

Śrīśa Chandra Vasu, The Ashtadhyayi of Panini (1897), via ashtadhyayi.com.