Is it permissible to eat different types of meat simultaneously and together, such as kebab made from lamb and beef?

It is permissible to expand one's meal by combining two or more types of food, as the basic principle concerning foodstuffs is permissibility, except for what Allah and His Messenger have forbidden. It is not permissible to forbid what Allah has made lawful of good things. Texts have been narrated confirming this permissibility, such as the Prophet, peace and blessings be upon him, eating cucumbers with fresh dates, and butter with dates. There is no disagreement among scholars regarding its permissibility. However, one should observe moderation and avoid extravagance, and it should not be the Muslim's constant habit, lest he become preoccupied with the desire of his stomach over matters of his Hereafter. He should accustom himself to abandoning luxury at times.