Rig Veda 1.43.1

Sanskrit text [Accents, Plain, Transliterated]:

कद्रु॒द्राय॒ प्रचे॑तसे मी॒ळ्हुष्ट॑माय॒ तव्य॑से । वो॒चेम॒ शंत॑मं हृ॒दे ॥
कद्रुद्राय प्रचेतसे मीळ्हुष्टमाय तव्यसे । वोचेम शंतमं हृदे ॥
kad rudrāya pracetase mīḻhuṣṭamāya tavyase | vocema śaṃtamaṃ hṛde ||

English translation:

“When may we repeat a most grateful hymn to the wise, the most bountiful and mighty Rudra, who is (cherished) in our hearts?”

Commentary by Sāyaṇa: Ṛgveda-bhāṣya

Rudra means, he who makes to weep, who causes all the weep at the end of time; he thus gets identified with the principle of destruction, or Śiva; in this Sūkta he presides over medicinal plural nts and is a beneficent deity

Details:

Ṛṣi (sage/seer): kaṇvo ghauraḥ [kaṇva ghaura];
Devatā (deity/subject-matter): rudraḥ ;
Chandas (meter): gāyatrī;
Svara (tone/note): Swar;

Padapatha [Accents, Plain, Transliterated]:

कत् । रु॒द्राय॑ । प्रऽचे॑तसे । मी॒ळ्हुःऽत॑माय । तव्य॑से । वो॒चेम॑ । शम्ऽत॑मम् । ह्द॒े ॥
कत् । रुद्राय । प्रचेतसे । मीळ्हुःतमाय । तव्यसे । वोचेम । शम्तमम् । ह्दे ॥
kat | rudrāya | pra-cetase | mīḷhuḥ-tamāya | tavyase | vocema | śam-tamam | hṛde

Multi-layer Annotation of the Ṛgveda

[Rigveda 1.43.1 English analysis of grammar]