Ubaidullah, the son of Abdullah bin Umar (may Allah be pleased with them), said: I wondered about Abdullah bin Umar’s (may Allah be pleased with them) opinion regarding performing ablution for every prayer, whether he was in a state of purity or not—why did he do so? He said: Asma bint Zaid bin Al-Khattab narrated to him that Abdullah bin Hanzalah bin Abi Amir narrated to her that the Messenger of Allah (peace and blessings be upon him) ordered them to perform ablution for every prayer, whether they were already pure or not. Then, when this became difficult for them, he ordered them to use the miswak for every prayer. And Abdullah bin Umar (may Allah be pleased with them) believed that he had the strength to perform ablution for every prayer, so he never abandoned ablution for any prayer.