It is narrated about Sayyiduna Abdullah bin Mas'ud (may Allah be pleased with him) that after saying the salam, he performed the prostration of forgetfulness (sajda sahw) twice, and he stated that the Noble Prophet (peace and blessings be upon him) had performed these prostrations after the salam. Sufyan says: This narration is lengthy, but only this part I remember.
Hadith Referenceمسند الحميدي / 96
Hadith Gradingمحدثین:إسناده صحيح
Hadith Takhrij«إسناده صحيح ، وأخرجه البخاري فى "صحيحه" برقم: 401،404،1226، 6671، 7249، ومسلم: 572، وأبو يعلى الموصلي فى ”مسنده“:5002، وصحیح ابن حبان: 2656»