If he did ‘Umrah so that he could do Hajj tamattu‘, and he did ‘Umrah several times before Hajj, does he have to offer more than one sacrifice?
Question

                With regard to a pilgrim who is doing tamattu‘ and has completed his ‘Umrah, and is waiting for Yawm al-Tarwiyah (8th Dhu’l-Hijjah) so that he can enter ihram for Hajj, is it permissible for him to do ‘Umrah again? We have with us a person who claims that this is permissible for the one who has exited ihram, so long as he is waiting for Hajj. If that is permissible, does he have to offer a hadiy (sacrifice) for ‘each ‘Umrah, based on the verse in which Allah says (interpretation of the meaning): “whosoever performs the Umrah in the months of Hajj, before (performing) the Hajj, (i.e. Hajj-at-Tamattu and Al-Qiran), he must slaughter a Hady such as he can afford” [al-Baqarah 2:196]?.
Praise be to Allah.
    It is permissible for the pilgrim doing tamattu‘, who has 
    completed his ‘Umrah and is staying in Makkah waiting for Hajj, to do ‘Umrah 
    during this period, especially if he leaves Makkah to go to Madeenah and the 
    like, then comes back to Makkah. And that does not mean that he has to offer 
    more than one sacrifice, because what is meant in the verse is that the one 
    who does Hajj tamattu‘ has to offer a sacrifice. Even if he does ‘Umrah 
    repeatedly, he is not going to do Hajj more than once, so he does not have 
    to offer any more than one sacrifice. 

    But is it prescribed for one who is staying in Makkah and not 
    leaving to repeat ‘Umrah as many people do nowadays, by going out to 
    at-Tan‘eem to enter ihram for ‘Umrah? 

    There is a difference of opinion concerning that among the 
    scholars. Some of them say that there is a concession allowing that, and 
    others say that it is makrooh and regard it as being contrary to the actions 
    of the salaf (early generations). 

    See the answers to questions no.
    49897 and
    111501. 

    And Allah knows best.