(a) Sayyiduna Ibn Umar (may Allah be pleased with them both) says that the Prophet (peace and blessings be upon him) performed ablution washing each part once, then said: "This is the ablution without which prayer is not accepted." Then he performed ablution washing each part twice, then said: "This is the ablution of the one who will be given a double reward." Then he performed ablution washing each part three times, then said: "This is my ablution and the ablution of the Prophets before me."
(b) In the hadith of Abdullah bin Sulayman it is: without it Allah does not accept prayer; and he said: "Allah will give him a double reward."
This hadith, by this route, is narrated only by al-Musayyab bin Wadih, and he is not strong.
Hadith Referenceالسنن الكبرى للبيهقي / كتاب الطهارة / 379