Fiqh-us-Sunnah Volume 5, Hajj and ‘Umrah, Fiqh 5.115.
Section : Amount of Meat to be Eaten of the Sacrifice.
A person offering a sacrifice may consume, without any restrictions, any amount of meat he may desire. He may likewise give away or offer in charity any amount he may wish. Some scholars said that one may eat half and give away the other half in charity, while others said that the meat be divided into three parts. Of these one may keep a part, distribute a part, and give in charity the third part.