Musannaf Ibn Abi Shaybah 13534 — A man who enters ihram for Hajj

Sayyiduna Abdullah bin al-Zubayr (may Allah be pleased with him) delivered a sermon and said: O people! By Allah, combining Umrah with Hajj (tamattu') is not as you people say. Rather, combining Umrah with Hajj is this: a person enters ihram for Hajj, then an illness or something else hinders him until the days of Hajj pass; then he arrives and converts that Hajj into an Umrah, performs Hajj tamattu' the following year, and also sends a sacrificial animal (offers a sacrifice). This is combining Umrah with Hajj.