Imam Bukhari narrates: Musaddad narrated to us, he said: Yazid bin Zurai' narrated to us, he said: Khalid narrated to us from Abi Qilabah from Malik bin al-Huwairith, may Allāh be pleased with him, from the Prophet ﷺ, he said:
When the time for prayer comes, you both give the Adhan and say the Iqamah for prayer, then let the elder of you two lead the prayer.
حَدَّثَنَا مُسَدَّدٌ، قَالَ حَدَّثَنَا يَزِيدُ بْنُ زُرَيْعٍ، قَالَ حَدَّثَنَا خَالِدٌ، عَنْ أَبِي قِلاَبَةَ، عَنْ مَالِكِ بْنِ الْحُوَيْرِثِ، عَنِ النَّبِيِّ صلى الله عليه وسلم قَالَ " إِذَا حَضَرَتِ الصَّلاَةُ فَأَذِّنَا وَأَقِيمَا، ثُمَّ لِيَؤُمَّكُمَا أَكْبَرُكُمَا ".
Reference: Sahih Al Bukhari 658