द्व्यचश्छन्दसि

Operational rule vidhi

In the छन्दस् (Vedas) after a disyllabic word the affix मयट् comes in the sense of 'product or part'.

Word by word (padaccheda)

Left context द्वि- pañcamī · ekavacanaRight context छन्दसि saptamī · ekavacana

Left context Pañcamī (5th case): "after X", the operation applies to what follows (1.1.67 तस्मादित्युत्तरस्य). Also used for limits and sources.
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").

Dotted words are technical terms, dashed ones pratyāhāras (names for classes of sounds or affixes). Hover or tap one to see its card.

Full reading

द्वि- छन्दसि

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

Commentary

In the छन्दस् (Vedas) after a disyllabic word the affix मयट् comes in the sense of 'product or part'.
This ordains मयट् in the sacred literature also, secular literature being dealt with in 4.3.143. Thus पर्णमयः, दर्भमयः, शरमयः in the following यस्य पर्णमयी जुहूर्भवति, दर्भमयम् वासो भवति, शरमयम् बर्हि र्भवति ॥

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