It is narrated from Sayyidah Umm Khalid bint Khalid (may Allah be pleased with her) that she said: "I came to the Prophet (peace and blessings be upon him) and I saw the Seal of Prophethood between his (peace and blessings be upon him) shoulders."
No one narrated this hadith from Musa bin Uqbah (may Allah have mercy on him) except Bakkar bin Muhammad (may Allah have mercy on him), and Ibrahim bin al-Mundhir (may Allah have mercy on him) is alone in narrating it from him.
Hadith Referenceالمعجم الأوسط / باب العين / 4459
Hadith Takhrij«أخرجه الطبراني فى «الكبير» برقم: 245»