All perfect praise be to Allaah, The Lord of the worlds. I testify that there is none worthy of worship except Allaah and that Muhammad is His slave and Messenger.
It is permissible to eat all the parts of a halaal (lawful) animal, without any exception.
Al-Mudawwanah reads, “What is extra to the meat, such as the fat, liver, stomach, heart, lungs, spleen, kidneys, throat, testicles, leg (foot), head and the like, then all this takes the same ruling as meat.”
Therefore, you should know that it is permissible to eat the tongue of the animal or its other parts if it is an animal of which we are allowed to eat its meat, such as sheep, goats, and the like.
Allaah knows best.