Only is the brother is offended. There is no absolute language in the passage. In this case the situation dictates the behavior.
Otherwise Pauls command to ask no questions makes no sense. You would ALWAYS be required to ask if the meat had been offered to idols if it were an absolute matter.
Also, take your anti-Christian bigotry elsewhere.
To the RM: I dont see what that comments was necessary or warranted.
Paul puts his question forward in part because they are making references to permitting meat forbidden in the Mosaic times, and in part because unwittingly eating Halal is not a sin against yourself. Knowingly eating Halal is.
Also, I stated that you were being an anti-Christian bigot by your asking, “Why are Christians so dumb?” Sorry if my comment didn’t provide the appropriate context.