Sahih Muslim Book - 33, Hadith - 4713

حَدَّثَنَا أَبُو كُرَيْبٍ مُحَمَّدُ بْنُ الْعَلاَءِ حَدَّثَنَا أَبُو أُسَامَةَ عَنْ هِشَامِ بْنِ عُرْوَةَ عَنْ أَبِيهِ عَنِ ابْنِ عُمَرَ قَالَ حَضَرْتُ أَبِى حِينَ أُصِيبَ فَأَثْنَوْا عَلَيْهِ وَقَالُوا جَزَاكَ اللَّهُ خَيْرًا. فَقَالَ رَاغِبٌ وَرَاهِبٌ قَالُوا اسْتَخْلِفْ فَقَالَ أَتَحَمَّلُ أَمْرَكُمْ حَيًّا وَمَيِّتًا لَوَدِدْتُ أَنَّ حَظِّى مِنْهَا الْكَفَافُ لاَ عَلَىَّ وَلاَ لِى فَإِنْ أَسْتَخْلِفْ فَقَدِ اسْتَخْلَفَ مَنْ هُوَ خَيْرٌ مِنِّى - يَعْنِى أَبَا بَكْرٍ - وَإِنْ أَتْرُكْكُمْ فَقَدْ تَرَكَكُمْ مَنْ هُوَ خَيْرٌ مِنِّى رَسُولُ اللَّهِ -صلى الله عليه وسلم-. قَالَ عَبْدُ اللَّهِ فَعَرَفْتُ أَنَّهُ حِينَ ذَكَرَ رَسُولَ اللَّهِ -صلى الله عليه وسلم- غَيْرُ مُسْتَخْلِفٍ.

It was narrated that Ibn 'Umar said: "I was with my father when he was wounded. They praised him and said: 'May Allah reward you with good.' He said: 'I hope (for Allah's mercy) and I fear (His wrath).' They said: 'Appoint a successor.' He said: 'Should I carry the burden of your affairs in life and in death? Would that my caliphate would conclude with nothing to my credit or counting against me. If I appoint a successor, then one who was better than me appointed a successor' - meaning Abu Bakr - 'and if I do not do that, then one who was better than me, the Messenger of Allah (s.a.w), did not do that either."' 'Abdullah said: "Then I knew, when he mentioned the Messenger of Allah (s.a.w), that he was not going to appoint a successor."