Matlab bin Abdullah says that Sayyiduna Ibn Umar (may Allah be pleased with them) used to wash the limbs of wudu three times each and attributed this to the Prophet (peace and blessings be upon him), whereas Sayyiduna Ibn Abbas (may Allah be pleased with them) used to wash them once each and he too attributed this to the Prophet (peace and blessings be upon him).
Hadith Referenceمسند احمد / ومن مسند بني هاشم / 3526
Hadith Gradingحکم دارالسلام:صحيح لغيره، المطلب بن عبدالله مدلس، وروايته عن ابن عمر وابن عباس مرسلة