Hadith -- Bakr Eid

Narrated Ibn 'Umar (Radi-Allahu 'anhu):

When the Prophet (Sallallahu 'Alaihi Wa Sallam) performed the Tawaf of the
Ka'ba, he did Ramal during the first three rounds and in the last four
rounds he used to walk and while doing Tawaf between Safa and Marwa, he
used to run in the midst of the rain water passage.

Bukhari Vol. 2 : No. 685