Sahih al-Bukhari
Sahih al-Bukhari 630
If there are many travellers, Adhan and Iqama should be pronounced, (the same is to be observed) in 'Arafat and Al-Muzdalifa too
Arabic hadith text
حَدَّثَنَا مُحَمَّدُ بْنُ يُوسُفَ، قَالَ حَدَّثَنَا سُفْيَانُ، عَنْ خَالِدٍ الْحَذَّاءِ، عَنْ أَبِي قِلاَبَةَ، عَنْ مَالِكِ بْنِ الْحُوَيْرِثِ، قَالَ أَتَى رَجُلاَنِ النَّبِيَّ صلى الله عليه وسلم يُرِيدَانِ السَّفَرَ فَقَالَ النَّبِيُّ صلى الله عليه وسلم "إِذَا أَنْتُمَا خَرَجْتُمَا فَأَذِّنَا ثُمَّ أَقِيمَا ثُمَّ لِيَؤُمَّكُمَا أَكْبَرُكُمَا "
Translation
Narrated Malik bin Huwairith
Two men came to the Prophet (ﷺ) with the intention of a journey. The Prophet (ﷺ) said, "When (both of) you set out, pronounce Adhan and then Iqama and the oldest of you should lead the prayer."