All perfect praise be to Allaah, the Lord of the Worlds. I testify that there is none worthy of worship except Allaah, and that Muhammad, sallallaahu ‘alayhi wa sallam, is His Slave and Messenger.
It is not required for the Muslim, in order to assume Ihraam for Hajj or ‘Umrah, to perform ablution, Ghusl, be in a state of Tahaarah, or pray two Raka‘hs. All these actions are recommended matters which are preferable for the pilgrim to do before assuming Ihraam. He is recommended to clean himself, perform Ghusl and ablution, and pray two Rak’ahs, then, assume the state of Ihraam after praying the two Rak‘ahs. It is not necessary for a person to be in a state of Tahaarah from the major Hadath (impurities on one’s body or clothing) or menstrual period. Thus, if a person who is in a state of Janaabah commences his Ihraam, then his Ihraam is valid. However, if he was able to assume Ihraam after Tahaarah and before he passes beyond the Meeqaat, it would be disliked to assume Ihraam in the state of Janaabah, as stated by some Muslim jurists.
A Muslim in the state of Janaabah is required to perform Ghusl in order to perform prayer and make Tawaaf (circumambulation of the Ka’bah), because Tahaarah from the major and minor Hadath is a prerequisite for the validity of prayer and Tawaaf.
Allaah Knows best.