Mistakes and hastening on the eleventh day of Dhu’l-Hijjah
Question

                If a person does not stone the Jamaraat on the twelfth day of Dhu’l-Hijjah, thinking that this is what is meant by hastening, and he leaves without doing the farewell tawaaf, what is the ruling in this case?.
Praise be to Allah.Shaykh Ibn ‘Uthaymeen (may Allaah have mercy 
    on him) said: 
His Hajj is valid, because he did not omit 
    any of the essential parts of Hajj, but he has omitted three of the obligatory duties of Hajj if he did not spend the night of the twelfth in 
    Mina. 
The first duty he omitted is spending the 
    night of the twelfth in Mina 
The second is stoning the Jamaraat on the 
    twelfth day. 
The third is the farewell tawaaf. 
For each of these he has to offer a sacrifice to be slaughtered in Makkah and its meat should 
    be distributed to the poor. 
Fataawa Arkaan al-Islam, 
    p. 566 
Because whoever omits one of the obligatory 
    duties of Hajj has to offer a sacrifice to be slaughtered in Makkah and its meat should be distributed to the poor.