Sayyiduna Malik bin Huwairith (may Allah be pleased with him) narrates: I came to the service of the Prophet (peace and blessings of Allah be upon him) and a friend of mine was with me. The Prophet (peace and blessings of Allah be upon him) said: When you both perform prayer, give the adhan and say the iqamah, and the one who is older among you should lead the prayer. The narrator says: Both of them were of the same age. (Imam Ibn Hibban, may Allah have mercy on him, says:) The statement of the Prophet (peace and blessings of Allah be upon him) "that you both give the adhan and you both say the iqamah" means that one of them should do so, not that both should do so.
Hadith Referenceصحیح ابن حبان / كتاب الصلاة / 2128
Hadith Gradingفضيلة الشيخ الإمام محمد ناصر الدين الألبانيصحيح - مضى (1656)، وانظر ما بعده. تنبيه!! رقم (1656) = (1658) من «طبعة المؤسسة». - مدخل بيانات الشاملة -.فضيلة الشيخ العلّامة شُعيب الأرناؤوطإسناده صحيح على شرط مسلم، وهب بن بقية: يقة من رجال مسلم ومن فوقه من رجال الشيخين، خالد الحذاء: هو خالد بن مهران، وأبو قلابة: هو عبد الله بن زيد الجرمي.