Salam Alaikom, What does Islam say about giving up children for adoption?
I don't know.
On a side note, Islam doesn't speak for itself; it is a religion that has revelation (Qur'an and Hadeeth) and scholarly deductions (consensus, analogy, etc). When you ask someone, they answer to the best of their - limited - knowledge. So, instead ask for one's scholarly opinion on a matter. And they'll respond to the best of their knowledge and suffix it with: and God knows best.
On a side note, Islam doesn't speak for itself; it is a religion that has revelation (Qur'an and Hadeeth) and scholarly deductions (consensus, analogy, etc). When you ask someone, they answer to the best of their - limited - knowledge. So, instead ask for one's scholarly opinion on a matter. And they'll respond to the best of their knowledge and suffix it with: and God knows best.