Musannaf Ibn Abi Shaybah 8465 — Those who said: the traveller combines

Umar bin Ali said: When travelling, Sayyiduna Ali (may Allah be pleased with him) would pray Maghrib, then eat his evening meal, then pray Isha straight after it. Then he would say: This is how I saw the Messenger of Allah (peace and blessings be upon him) do it.