Abu Hanifah, an Imam of Ahle Sunnat told Imam Ja’far as-Sadiq (a.s), “Your son, Musa Ibn Ja’far (a.s) was performing prayers in such a way that people were passing across him in the front. Does this not make a difference in concentration and humility?” Imam said, “I will call him, you may ask him directly.” When this objection was mentioned to him he said, “One to Whom I was praying was more near to me than those people. He himself says: We are closer than the jugular vein.”
As soon as he heard this the face of Abu Hanifah paled and he could not say anything. Imam Ja’far as-Sadiq (a.s) embraced his son and said, “Bravo! O protector of the divine secrets!”
Reference :Akhlaq al-A’imma, Morals & Manners of the Holy Imams