This is because, in my respectful view, it is settled that a transaction created by a deed will not come into effect prior to the delivery of the deed. In other words, a deed only becomes effective upon its delivery. So, until the time specified had arrived or the condition had been performed or the Governor has given his consent, the instrument, will not be a deed so to speak, but is a mere escrow.
– Ogbuagu, JSC. Brossette v. Ilemobola (2007)