When To Perform Stoning in Hajj?

What is the ruling concerning one who does Ramy on the 11th day of Dhul-Hijjah, then makes the Tawaf Al-Wada' around the House (Ka'bah) before traveling?

If he does Ramy on the 11th day of Dhul-Hijjah, then makes the Tawaf Al-Wada' around the House (Ka'bah) and then travels, he has neglected two obligations upon him and they are the Ramy of the Jamarat on the 12th day of Dhul-Hijjah and remaining in Mina the night prior to the 12th day of Dhul-Hijjah.

So he is, therefore, required to make two Fidyah's as compensation according to what many people of knowledge have said, so he must slaughter them in Mecca and donate it there.

Sheikh Ibn Uthaymeen