Imaam Al-Albaani (may Allaah have mercy upon him) stated:

It’s a must that something from the slaughtered animal be given in charity without designating a specific amount, as some have claimed. (They claimed that it be divided into) thirds: a third that the person eats during the Eid, a third that the person gives in charity, and a third that the person stores. This dividing of the meat into thirds has no origin. The case is only that the meat be divided into three categories (to be given), without designating the amount to be given. This is what has come (in the narration). This is because the Prophet (sallallaahu alayhi wa sallam) said: “I used to prohibit you from storing the meat of the slaughtered animal. Now eat, give in charity, and save some (of the slaughtered animal).” The Prophet didn’t designate a specific amount (to be given). 

Source: Silsilatul-Hudaa wan-Noor, Recording #208

Translated by: Abu Yusuf Khaleefah
3rd of Dhul Hijjah, 1435 (27th of September, 2014)
Masjid Nur Allah, LeFrak City, Corona, NYC

Original Arabic

هذا التثليث لا أصل له؛

:قال الإمام الألباني رحمه الله

الأضحية لابد من أن يتصدق منها بشيء دون تحديد كما يزعم البعض؛ ثلاثة أثلاث! ثلث يأكله في العيد، وثلث يتصدق به، وثلث يدخره، هذا التثليث لا أصل له؛ وإنما تقسيم ثلاثة أقسام دون تحديد هذا وارد؛لأن النبي عليه الصلاة والسلام
.قال: {كنت نهيتكم عن ادخار لحوم الأضاحي، ألا فكلوا وتصدقوا وادَّخروا} ما حدَّد

(208 :أهـ. المصدر من سلسلة الهدى والنورشريط رقم)