Those who performed ablution whenever they prayed

Ikrimah said: Sayyiduna Sa'd (may Allah be pleased with him) said: "Once you have performed ablution, keep praying with that ablution as long as it has not been broken." And Sayyiduna Ali (may Allah be pleased with him), citing the verse of the Noble Qur'an, said: "When you rise for prayer, wash your faces and your hands."

Ibn Sirin said: The Rightly Guided Caliphs used to perform a separate ablution for every prayer.

Muhammad (Ibn Sirin) said: Sayyiduna Abu Bakr, Sayyiduna Umar and Sayyiduna Uthman (may Allah be pleased with them), as far as Abu Khalid knows, used to perform a separate ablution for every prayer. If they were in the mosque, they would call for a basin.