Rig Veda 3.33.13

Sanskrit text [Accents, Plain, Transliterated]:

उद्व॑ ऊ॒र्मिः शम्या॑ ह॒न्त्वापो॒ योक्त्रा॑णि मुञ्चत । मादु॑ष्कृतौ॒ व्ये॑नसा॒घ्न्यौ शून॒मार॑ताम् ॥
उद्व ऊर्मिः शम्या हन्त्वापो योक्त्राणि मुञ्चत । मादुष्कृतौ व्येनसाघ्न्यौ शूनमारताम् ॥
ud va ūrmiḥ śamyā hantv āpo yoktrāṇi muñcata | māduṣkṛtau vyenasāghnyau śūnam āratām ||

English translation:

“Let your waves (rivers) so flow that the pin of the yoke may be above (their) waters; leave the traces full, and may (the two streams), exempt from misfortune or defect, and uncensured, exhibit no (present) increase.”

Commentary by Sāyaṇa: Ṛgveda-bhāṣya

The pin: śamyā, yugkīla; or, the ropes that are fastened to the ends of the yoke, the traces: yugyakaṇṭha pārśvādi saṃlagna rajjavaḥ; yoktrāṇi is also similarly explained; perhaps, these refer to the traces; exhibit no present increase: ma śūnam āratām: śūnam = samṛddhim, increase, referring merely to the present moment; i.e., may the rivers not so rise as to prevent his passage; or, it may convey a wish that the rivers might never suffer any diminution, taking śūnam in the sense of śūnyam, emptiness

Details:

Ṛṣi (sage/seer): gopavana ātreyaḥ saptavadhrirvā [gopavana ātreya saptavadhrirvā];
Devatā (deity/subject-matter): nadyaḥ ;
Chandas (meter): uṣṇik ;
Svara (tone/note): Swar;

Padapatha [Accents, Plain, Transliterated]:

उत् । वः॒ । ऊ॒र्मिः । शम्याः॑ । ह॒न्तु॒ । आपः॑ । योक्त्रा॑णि । मु॒ञ्च॒त॒ । मा । अदुः॑ऽकृतौ । विऽए॑नसा । अ॒घ्न्यौ । शून॑म् । आ । अ॒र॒ता॒म् ॥
उत् । वः । ऊर्मिः । शम्याः । हन्तु । आपः । योक्त्राणि । मुञ्चत । मा । अदुःकृतौ । विएनसा । अघ्न्यौ । शूनम् । आ । अरताम् ॥
ut | vaḥ | ūrmiḥ | śamyāḥ | hantu | āpaḥ | yoktrāṇi | muñcata | mā | aduḥ-kṛtau | vi-enasā | aghnyau | śūnam | ā | aratām

Multi-layer Annotation of the Ṛgveda

[Rigveda 3.33.13 English analysis of grammar]