It has been reported on the authority of Ibn 'Umar who said: I entered the apartment of (my sister) Hafsa. She said: Do yoa know that your father is not going to nominate his successor? I said: He won' t do that (i. e. he would nominate). She said: He is going to do that. The narrator said: I took an oath that I will talk to him about the matter. I kept quiet until the next morning, still I did not talk to him, and I felt as if I were carryint, a mountain on my right hand. At last I came to him and entered his apartment. (Seeing me) he began to ask me about the condition of the people, and I informed him (about them). Then I said to him: I heard something from the people and took an oath that I will communicate it to you. They presume that you are not going to nominate a successor. If a grazer of camels and sheep that you had appointed comes back to you leaving the cattle, you will (certainly) think that the cattle are lost. To look after the people is more serious and grave. (The dying Caliph) was moved at my words. He bent his head in a thoughtful mood for some time and raised it to me and said: God will doubtlessly protect His religion. If I do not nominate a successor (I have a precedent before me), for the Messenger of Allah (ﷺ) did not nominate his successor. And if I nominate one (I have a precedent), for Abu Bakr did nominate. The narrator (Ibn Umar) said: By God. when he mentioned the Messenger of Allah (ﷺ) and Abu Bakr, I (at once) understood that he would not place anyone at a par with the Messenger of Allah (ﷺ) and would not nominate anyone.
Sahih Muslim 1823b
Chapters
1 Introduction 2 The Book of Faith 3 The Book of Purification 4 The Book of Menstruation 5 The Book of Prayers 6 The Book of Mosques and Places of Prayer 7 The Book of Prayer - Travellers 8 The Book of Prayer - Friday 9 The Book of Prayer - Two Eids 10 The Book of Prayer - Rain 11 The Book of Prayer - Eclipses 12 The Book of Prayer - Funerals 13 The Book of Zakat 14 The Book of Fasting 15 The Book of I'tikaf 16 The Book of Pilgrimage 17 The Book of Marriage 18 The Book of Suckling 19 The Book of Divorce 20 The Book of Invoking Curses 21 The Book of Emancipating Slaves 22 The Book of Transactions 23 The Book of Musaqah 24 The Book of the Rules of Inheritance 25 The Book of Gifts 26 The Book of Wills 27 The Book of Vows 28 The Book of Oaths 29 The Book of Oaths, Muharibin, Qasas(Retaliation), andDiyat(Blood Money) 30 The Book of Legal Punishments 31 The Book of Judicial Decisions 32 The Book of Lost Property 33 The Book ofJihadand Expeditions 34 The Book on Government 35 The Book of Hunting, Slaughter, and what may be Eaten 36 The Book of Sacrifices 37 The Book of Drinks 38 The Book of Clothes and Adornment 39 The Book of Manners and Etiquette 40 The Book of Greetings 41 The Book Concerning the Use of Correct Words 42 The Book of Poetry 43 The Book of Dreams 44 The Book of Virtues 45 The Book of the Merits of the Companions 46 The Book of Virtue, Enjoining Good Manners, and Joining of the Ties of Kinship 47 The Book of Destiny 48 The Book of Knowledge 49 The Book Pertaining to the Remembrance of Allah, Supplication, Repentance and Seeking Forgiveness 50 The Book of Heart-Melting Traditions 51 The Book of Repentance 52 Characteristics of The Hypocrites And Rulings Concerning Them 53 Characteristics of the Day of Judgment, Paradise, and Hell 54 The Book of Paradise, its Description, its Bounties and its Inhabitants 55 The Book of Tribulations and Portents of the Last Hour 56 The Book ofZuhdand Softening of Hearts 57 The Book of Commentary on the Qur'an