Rig Veda 1.191.1

Sanskrit text [Accents, Plain, Transliterated]:

कङ्क॑तो॒ न कङ्क॒तोऽथो॑ सती॒नक॑ङ्कतः । द्वाविति॒ प्लुषी॒ इति॒ न्य१॒॑दृष्टा॑ अलिप्सत ॥
कङ्कतो न कङ्कतोऽथो सतीनकङ्कतः । द्वाविति प्लुषी इति न्यदृष्टा अलिप्सत ॥
kaṅkato na kaṅkato 'tho satīnakaṅkataḥ | dvāv iti pluṣī iti ny adṛṣṭā alipsata ||

English translation:

“Some creature of little venom, some creature of great venom; or some venomous aquatic reptile; creatures of two kinds, both destructive (of life),or (poisonous) unseen creatures, have anointed me with their poison.”

Commentary by Sāyaṇa: Ṛgveda-bhāṣya

The sūkta is a mystical antidote against poison. This was recited by Agastya under an apprehension of having been poisoned. kaṅkata, na kaṅkata, satīna kaṅkata = alpaviṣaḥ kas;cit, something of little venom; tadviparīto analpaviṣo mahoragāi, the opposite of that of not little venom, like great snakes and the like;

Satina = water; of two kinds: of little or of much venom; or creatures of land or water; unseen creatures: adṛṣṭā = of invisible forms; the appellation of certain poisonous insects; a class of poisons, or of poisonous creatures: viśaviśeṣaḥ viṣadhara viśeṣa vā; having anointed: alipsata = have smeared, have spread over all the limbs

Details:

Ṛṣi (sage/seer): agastyo maitrāvaruṇiḥ [agastya maitrāvaruṇi];
Devatā (deity/subject-matter): aboṣadhisūryāḥ ;
Chandas (meter): uṣṇik ;
Svara (tone/note): Swar;

Padapatha [Accents, Plain, Transliterated]:

कङ्क॑तः । न । कङ्क॑तः । अथो॒ इति॑ । स॒ती॒नऽक॑ङ्कतः । द्वौ । इति॑ । प्लुषी॒ इति॑ । इति॑ । नि । अ॒दृष्टाः॑ । अ॒लि॒प्स॒त॒ ॥
कङ्कतः । न । कङ्कतः । अथो इति । सतीनकङ्कतः । द्वौ । इति । प्लुषी इति । इति । नि । अदृष्टाः । अलिप्सत ॥
kaṅkataḥ | na | kaṅkataḥ | atho iti | satīna-kaṅkataḥ | dvau | iti | pluṣī iti | iti | ni | adṛṣṭāḥ | alipsata

Multi-layer Annotation of the Ṛgveda

[Rigveda 1.191.1 English analysis of grammar]