Sayyiduna Anas bin Malik (may Allah be pleased with him) narrated, saying: The Messenger of Allah (peace and blessings be upon him) had cupping done, then prayed and did not perform ablution, and he did not wash any part beyond the places of the cupping. (He washed only the place where the cupping had been done.)
Hadith Referenceالسنن الكبرى للبيهقي / كتاب الطهارة / 666