Question Summary:
When is the correct time to make Qurbani?

Question Detail:

Please kindly educate me if one can kill his cow early in the morning before the eid prayer and kill the ram after the imam has slaughtered in praying ground. 

Answer :

In the Name of Allah, the Most Gracious, the Most Merciful.
As-salāmu ‘alaykum wa-rahmatullāhi wa-barakātuh.
If one is performing Qurbani (Ritual religious sacrifice) in a city/town, it is only permissible for one to slaughter one’s Qurbani animal (sheep, cow, goat, etc) after the Eid prayer.
However, if one is performing one’s Qurbani in a village/countryside, it is permissible for one to slaughter one’s Qurbani animal immediately after Subh al-Sadiq. [1]
And Allah Ta’āla Knows Best                                       
Ismail Desai,
Student Darul Iftaa
Durban, South Africa
Checked and Concurred by,
Moulana Abdul Azeem Bin Abdur Rahmaan
Student Darul Iftaa