Amr bin 'Amir al-Bajli عمرو بن عامر البجلي الكوفي · The Book on Purification

"The Prophet would perform Wudu for every Salat." I said, "So what about you, what would you do?" He said I wouId pray all of the prayers with one Wudu, as long as we had not committed Hadath (anything that invalidates Wudu)."