From Sahih Muslim (Hadith 4421):
Ibn Shihab (one of the narrators) said:One who had heard Jabir b. 'Abdullah saying this informed me thus: I was one of those who stoned him. We stoned him at the place of prayer (either that of 'Id or a funeral). When the stones hurt him, he ran away. We caught him in the Harra and stoned him (to death)
Reference: Muslim 4421