Vanadurgā Upaniṣad 1.5.p41

1.5.p41

yaste manyoriti ca caturdaśarcasya sūktasya rudro durvāsāstapanaputro manyurdevatā | apanilayantāmiti bījam | saṃsṛṣṭamiti śaktiḥ | śatruṃ kṣapayeti kīlakam | mama śatrukṣayārthe jape viniyogaḥ |
atha dhyānam-daṃṣṭrākarālavadanaṃ jvālāmālāśiroruham | kapālakartikāhastaṃ rudraṃ manyuṃ namāmyaham ||

Of the hymn of fourteen stanzas beginning with "yaste manyo", the seer is Rudra Durvāsas, son of Tapana; the deity is Manyu; "apanilayantām" is the seed-syllable; "saṃsṛṣṭam" is the power; "śatruṃ kṣapaya" is the pin; the ritual application is in chanting for the destruction of my enemies.\nNow, the meditation visualization: I bow to Rudra Manyu, whose face is terrifying with fangs, whose hair is a wreath of flames, and who holds a skull-cup and a chopper in his hands.