Which is the sutta in which a brahmin question buddha about giving teachings to lower caste?

Q & A
1

Which is the sutta in which a brahmin question buddha about giving teachings to lower caste. Buddha refuted him and advocate giving dhamma teachings to all castes. I read this sutta some days ago but forget its name. Now, I am not able to find it.

I am sure that i was a dialogue between Buddha and a Brahmin.

2

Snp3.9 or maybe Snp1.7 ?

3

Maybe MN 93 with Devala the Dark

4

Is it possible it was a discussion with a Brahmā not a brahmin? If so it could be MN49.

You might want to check through https://index.readingfaithfully.org/#Maara