No, you are wrong dear Mleccha

This Vedic Mantra has no concern with eating beef or any non-vegetarian food. Devta of this mantra 10/85/13 is “SURYA VIVAHA” So, this mantra relates to marriage. https://twitter.com/Farhan68020698/status/1287976288427233281

Here's the full mantra:
सूर्याया वहतुः प्रागात्सविता यमवासृजत् । अघासु हन्यन्ते गावोऽर्जुन्यो: पर्युह्यते ॥

The mantra states that in winter, the rays of sun get weakened and then get strong again in spring. The word used for sun-rays in ‘Go’ which also means cow

and hence the mantra can also be translated by making ‘cow’ and not ‘sun-rays’ as the subject.The word used for ‘weakened’ is ‘Hanyate’ which can also mean killing. So it has no concern with eating beef

Eating beef is strictly prohibited in Vedas. Read this thread to know more about this. https://twitter.com/vedicvishal/status/1265647552067768327?s=19