It is narrated from Sayyiduna Abdullah bin Umar (may Allah be pleased with them both) that the Messenger of Allah (peace and blessings be upon him) patted the chest of Sayyiduna Umar (may Allah be pleased with him) with his blessed hand three times when he accepted Islam, and he (peace and blessings be upon him) was saying: 'Allahumma akhrij ma fi sadrihi min ghillin, wa abdilhu imanan' (O Allah, remove whatever rancour is in his chest and replace it with faith). He (peace and blessings be upon him) said these words three times.
Imam al-Tabarani (may Allah have mercy on him) said: "No one narrated this hadith from Salim (may Allah have mercy on him) except Khalid bin Abi Bakr (may Allah have mercy on him)."
Hadith Referenceالمعجم الأوسط / باب الألف / 1096
Hadith Gradingمحدثین:رجاله ثقات
Hadith Takhrij«قال الهيثمي: رجاله ثقات «مجمع الزوائد ومنبع الفوائد، ج 9، ص 65»» «أخرجه الحاكم فى «المستدرك» برقم: 4518، والطبراني فى «الكبير» برقم: 13191»