where is the oil in a cumin seed?
(if I read the question properly)
" I would like it to mix with my cooking oil."

If you want cumin flavored oil, you can simply steep the cumin seed in a neutral flavored oil.

You will have to experiment for quantities and steep times.

I'd crush some seeds, put them in a pan and add some oil (whatever quantity, start small) and slightly heat the oil and turn off the heat; let steep for a while until cool.
Use a fine mesh sieve to remove the cumin seeds from the oil.