question #3 Sahih Muslim 1211n, Book 15, Hadith 132 : What are the implications of choosing different forms of Ihram for performing Hajj and Umrah?

Some among us put on Ihram for Hajj alone (Hajj Mufrad) ; some of us for Hajj and Umra together (Qiran), and some of us for Tamattal (first for Umra and after completing it for Hajj).