Language:
كتاب الأذان
10  
Call to Prayers (Adhaan)
(70)
Chapter: If the Imam weeps in As-Salat (the prayers) (will his Salat be valid?)
(70)
باب إِذَا بَكَى الإِمَامُ فِي الصَّلاَةِ
Sahih al-Bukhari 716

Narrated `Aisha:

the mother of the faithful believers: Allah's Messenger (ﷺ) in his last illness said, "Tell Abu Bakr to lead the people in the prayer." I said, "If Abu Bakr stood in your place, he would not be able to make the people hear him owing to his weeping. So please order `Umar to lead the prayer." He said, "Tell Abu Bakr to lead the people in the prayer." I said to Hafsa, "Say to him, 'Abu Bakr is a softhearted man and if he stood in your place he would not be able to make the people hear him owing to his weeping. So order `Umar to lead the people in the prayer.' " Hafsa did so but Allah's Messenger (ﷺ) said, "Keep quiet. Verily you are the companions of (Prophet) Joseph. Tell Abu Bakr to lead the people in the prayer." Hafsa said to me, "I never got any good from you."

حَدَّثَنَا إِسْمَاعِيلُ، قَالَ حَدَّثَنَا مَالِكُ بْنُ أَنَسٍ، عَنْ هِشَامِ بْنِ عُرْوَةَ، عَنْ أَبِيهِ، عَنْ عَائِشَةَ أُمِّ الْمُؤْمِنِينَ، أَنَّ رَسُولَ اللَّهِ صلى الله عليه وسلم قَالَ فِي مَرَضِهِ ‏"‏ مُرُوا أَبَا بَكْرٍ يُصَلِّي بِالنَّاسِ ‏"‏‏.‏ قَالَتْ عَائِشَةُ قُلْتُ إِنَّ أَبَا بَكْرٍ إِذَا قَامَ فِي مَقَامِكَ لَمْ يُسْمِعِ النَّاسَ مِنَ الْبُكَاءِ، فَمُرْ عُمَرَ فَلْيُصَلِّ‏.‏ فَقَالَ ‏"‏ مُرُوا أَبَا بَكْرٍ فَلْيُصَلِّ لِلنَّاسِ ‏"‏‏.‏ قَالَتْ عَائِشَةُ لِحَفْصَةَ قُولِي لَهُ إِنَّ أَبَا بَكْرٍ إِذَا قَامَ فِي مَقَامِكَ لَمْ يُسْمِعِ النَّاسَ مِنَ الْبُكَاءِ، فَمُرْ عُمَرَ فَلْيُصَلِّ لِلنَّاسِ‏.‏ فَفَعَلَتْ حَفْصَةُ‏.‏ فَقَالَ رَسُولُ اللَّهِ صلى الله عليه وسلم ‏"‏ مَهْ، إِنَّكُنَّ لأَنْتُنَّ صَوَاحِبُ يُوسُفَ، مُرُوا أَبَا بَكْرٍ فَلْيُصَلِّ لِلنَّاسِ ‏"‏‏.‏ قَالَتْ حَفْصَةُ لِعَائِشَةَ مَا كُنْتُ لأُصِيبَ مِنْكِ خَيْرًا‏.‏
Reference : Sahih al-Bukhari 716
In-book reference : Book 10, Hadith 111
USC-MSA web (English) reference : Vol. 1, Book 11, Hadith 684
  (deprecated numbering scheme)