The Time at which the slaughtering of sacrificial Animals of At-Tamattu' ends during the Hajj
Question :
When does the time of slaughtering the sacrificial animal for At-Tamattu' end and is there any difference of opinion and views concerning limiting the time?
Answer:
The time of slaughtering the sacrificial animal of At- Tamattu' ends at sunset on the 13th day of Thul-Hijjah and it begins when the (time in which the prayer can be performed) has passed on the day of the 'Eid after the sun rises to the height of a spear. In reference to whether there is a difference of opinion, yes, there is a difference of opinion concerning when it begins and ends. However, the correct view is what we have mentioned. And Allâh knows best.
Source:
Ash-Shaykh Ibn 'Uthaimin
Fatawa Islamiyah, Vol. 4 Page 276