Sayyiduna Abdullah bin Umar (may Allah be pleased with them both) narrates: Once I was sitting with the Prophet Muhammad (peace and blessings be upon him). During that time, a man came to you. He greeted you with salam and then left from there. I said: O Messenger of Allah! I love this person for the sake of Allah Almighty. The Prophet Muhammad (peace and blessings be upon him) asked: Have you told him this? I replied: No. The Prophet Muhammad (peace and blessings be upon him) said: Tell this to your brother. The narrator says: I went after that person. I caught up with him. I held him by the shoulder. I greeted him with salam and said: By Allah! I love you for the sake of Allah. He also said: By Allah! I also love you for the sake of Allah Almighty. I told him: If the Prophet of Allah had not commanded me to tell you this, I would not have done so. In narrating this tradition, the narrator named Azraq bin Ali is unique, and this has been stated by the Shaykh.
Hadith Referenceصحیح ابن حبان / كتاب البر والإحسان / 569
Hadith Gradingفضيلة الشيخ الإمام محمد ناصر الدين الألبانيحسن صحيح - «الصحيحة» (3253).فضيلة الشيخ العلّامة شُعيب الأرناؤوطإسناده حسن، الأزرق بن علي روى عنه جمع، وذكره المؤلف في "الثقات" 8/ 136 وقال: يغرب، وحسان بن إبراهيم حسن الحديث، روى له الشيخان أحاديث توبع عليها، ومن فوقهما ثقات من رجال الشيخين.