I'm trying to find exact verse where shyama-ayas and/or krishna-ayas are mentioned in Vedic samhitas, brahmanas, aranyakas and upanishads.
I could find a lot of pages claiming such references exist. Many say that they exist in Atharvaveda. But I haven't actually found any page with actual verse.
Searching Vedas using the following didn't yield any results.
I think this website does not have all the shlokas.
Many references to iron in answer here are really references to "ayas" and not shyama ayas.
Can someone give specific details about where such verses are?
Perhaps these indexes might help: