It is narrated from Sayyiduna Uthman (may Allah be pleased with him) that I saw the Prophet (peace and blessings be upon him) performing ablution; he washed his face three times, washed his hands three times, washed his arms three times, wiped his head, and washed his feet thoroughly.
Hadith Referenceمسند احمد / مسند الخلفاء الراشدين / 527
Hadith Gradingحکم دارالسلام:حديث صحيح، وهذا إسناد ضعيف، الحجاج مدلس وقد عنعن، وعطاء لم يدرك عثمان