The Prophet ﷺ said, "Allah will not accept the excuse of any person whose instant of death is delayed till he is sixty years of age."  

عَنِ النَّبِيِّ ﷺ فَقَالَ أَعْذَرَ اللَّهُ إِلَى امْرِئٍ أَخَّرَ أَجَلَهُ حَتَّى بَلَّغَهُ سِتِّينَ سَنَةً  

ʿUmar used to admit me (into his house) along with the old men who had fought in the Badr battle. Some of them said (to ʿUmar), "Why do you allow this young man to enter with us, while we have sons of his own age? " ʿUmar said, "You know what person he is." One day ʿUmar called them and called me along with them, I had thought he called me on that day to show them something about me (i.e. my knowledge). ʿUmar asked them, "What do you say about (the Sura): "When comes the help of Allah and the Conquest (of Mecca) And you see mankind entering the Religion of Allah (i.e. Islam) in crowds. 'So celebrate the Praises Of your Lord and ask for His forgiveness, Truly, He is the One Who accepts repentance and forgives." (110.1-3) Some of them replied, "We are ordered to praise Allah and repent to Him if we are helped and granted victory." Some said, "We do not know." Others kept quiet. ʿUmar then said to me, "Do you say similarly?" I said, "No." ʿUmar said "What do you say then?" I said, "This Verse indicates the approaching of the death of Messenger of Allah ﷺ of which Allah informed him. When comes the help of Allah and the Conquest, i.e. the Conquest of Mecca, that will be the sign of your Prophet's) approaching death, so testify the uniqueness of your Lord (i.e. Allah) and praise Him and repent to Him as He is ready to forgive." On that, ʿUmar said, "I do not know about it anything other than what you know."  

كَانَ عُمَرُ يُدْخِلُنِي مَعَ أَشْيَاخِ بَدْرٍ فَقَالَ بَعْضُهُمْ لِمَ تُدْخِلُ هَذَا الْفَتَى مَعَنَا وَلَنَا أَبْنَاءٌ مِثْلُهُ فَقَالَ إِنَّهُ مِمَّنْ قَدْ عَلِمْتُمْ قَالَ فَدَعَاهُمْ ذَاتَ يَوْمٍ وَدَعَانِي مَعَهُمْ قَالَ وَمَا رُئِيتُهُ دَعَانِي يَوْمَئِذٍ إِلاَّ لِيُرِيَهُمْ مِنِّي فَقَالَ مَا تَقُولُونَ {إِذَا جَاءَ نَصْرُ اللَّهِ وَالْفَتْحُ * وَرَأَيْتَ النَّاسَ يَدْخُلُونَ} حَتَّى خَتَمَ السُّورَةَ فَقَالَ بَعْضُهُمْ أُمِرْنَا أَنْ نَحْمَدَ اللَّهَ وَنَسْتَغْفِرَهُ إِذَا نُصِرْنَا وَفُتِحَ عَلَيْنَا وَقَالَ بَعْضُهُمْ لاَ نَدْرِي أَوْ لَمْ يَقُلْ بَعْضُهُمْ شَيْئًا فَقَالَ لِي يَا ابْنَ عَبَّاسٍ أَكَذَاكَ تَقُولُ قُلْتُ لاَ قَالَ فَمَا تَقُولُ قُلْتُ هُوَ أَجَلُ رَسُولِ اللَّهِ ﷺ أَعْلَمَهُ اللَّهُ لَهُ {إِذَا جَاءَ نَصْرُ اللَّهِ وَالْفَتْحُ} فَتْحُ مَكَّةَ فَذَاكَ عَلاَمَةُ أَجَلِكَ {فَسَبِّحْ بِحَمْدِ رَبِّكَ وَاسْتَغْفِرْهُ إِنَّهُ كَانَ تَوَّابًا} قَالَ عُمَرُ مَا أَعْلَمُ مِنْهَا إِلاَّ مَا تَعْلَمُ  

ʿUmar used to make me sit with the elderly men who had fought in the Battle of Badr. Some of them felt it (did not like that) and said to ʿUmar "Why do you bring in this boy to sit with us while we have sons like him?" ʿUmar replied, "Because of what you know of his position (i.e. his religious knowledge.)" One day ʿUmar called me and made me sit in the gathering of those people; and I think that he called me just to show them. (my religious knowledge). ʿUmar then asked them (in my presence). "What do you say about the interpretation of the Statement of Allah: 'When comes Help of Allah (to you O, Muhammad against your enemies) and the conquest (of Mecca).' (110.1) Some of them said, "We are ordered to praise Allah and ask for His forgiveness when Allah's Help and the conquest (of Mecca) comes to us." Some others kept quiet and did not say anything. On that, ʿUmar asked me, "Do you say the same, O Ibn ʿAbbas?" I replied, "No." He said, 'What do you say then?" I replied, "That is the sign of the death of Messenger of Allah ﷺ which Allah informed him of. Allah said:-- '(O Muhammad) When comes the Help of Allah (to you against your enemies) and the conquest (of Mecca) (which is the sign of your death). You should celebrate the praises of your Lord and ask for His Forgiveness, and He is the One Who accepts the repentance and forgives.' (110.3) On that ʿUmar said, "I do not know anything about it other than what you have said."  

كَانَ عُمَرُ يُدْخِلُنِي مَعَ أَشْيَاخِ بَدْرٍ فَكَأَنَّ بَعْضَهُمْ وَجَدَ فِي نَفْسِهِ فَقَالَ لِمَ تُدْخِلُ هَذَا مَعَنَا وَلَنَا أَبْنَاءٌ مِثْلُهُ فَقَالَ عُمَرُ إِنَّهُ مِنْ حَيْثُ عَلِمْتُمْ فَدَعَا ذَاتَ يَوْمٍ فَأَدْخَلَهُ مَعَهُمْ فَمَا رُئِيتُ أَنَّهُ دَعَانِي يَوْمَئِذٍ إِلاَّ لِيُرِيَهُمْ قَالَ مَا تَقُولُونَ فِي قَوْلِ اللَّهِ تَعَالَى {إِذَا جَاءَ نَصْرُ اللَّهِ وَالْفَتْحُ} فَقَالَ بَعْضُهُمْ أُمِرْنَا نَحْمَدُ اللَّهَ وَنَسْتَغْفِرُهُ إِذَا نُصِرْنَا وَفُتِحَ عَلَيْنَا وَسَكَتَ بَعْضُهُمْ فَلَمْ يَقُلْ شَيْئًا فَقَالَ لِي أَكَذَاكَ تَقُولُ يَا ابْنَ عَبَّاسٍ فَقُلْتُ لاَ قَالَ فَمَا تَقُولُ قُلْتُ هُوَ أَجَلُ رَسُولِ اللَّهِ ﷺ أَعْلَمَهُ لَهُ قَالَ {إِذَا جَاءَ نَصْرُ اللَّهِ وَالْفَتْحُ} وَذَلِكَ عَلاَمَةُ أَجَلِكَ {فَسَبِّحْ بِحَمْدِ رَبِّكَ وَاسْتَغْفِرْهُ إِنَّهُ كَانَ تَوَّابًا} فَقَالَ عُمَرُ مَا أَعْلَمُ مِنْهَا إِلاَّ مَا تَقُولُ  

The Messenger of Allah ﷺ often would say, "subḥāna Allāhi wa-bi-ḥamdihī, astaghfiru Allāh wa-atūbu ilayhi (Glory be to Allah and with His praise, I seek the forgiveness of Allah and I repent to Him.)"

She said: I asked: Messenger of Allah, I see that you often repeat the saying subḥāna Allāhi wa-bi-ḥamdihī astaghfiru Allāh wa-atūbu ilayhi. He said, "My Lord informed me that I would soon see a sign in my Ummah. So when I see it I often say: subḥāna Allāhi wa-bi-ḥamdihī, astaghfiru Allāh wa-atūbu ilayhi. Indeed I saw it ˹when this āyah˺ was revealed: 'When the Help of Allah and the victory came,' i.e. Conquest of Makkah, 'And you see the people entering into the religion of Allah in multitudes, Then exalt ˹Him˺ with praise of your Lord and ask forgiveness of Him. Indeed, He is ever Accepting of repentance.' (Naṣr 110:1-3"  

كَانَ رَسُولُ اللَّهِ ﷺ يُكْثِرُ مِنْ قَوْلِ: «(سُبْحَانَ اللَّهِ وَبِحَمْدِهِ، أَسْتَغْفِرُ اللَّهَ وَأَتُوبُ إِلَيْهِ۔)»

قَالَتْ فَقُلْتُ: يَا رَسُولَ اللَّهِ أَرَاكَ تُكْثِرُ مِنْ قَوْلِ سُبْحَانَ اللَّهِ وَبِحَمْدِهِ أَسْتَغْفِرُ اللَّهَ وَأَتُوبُ إِلَيْهِ۔ فَقَالَ: «خَبَّرَنِي رَبِّي أَنِّي سَأَرَى عَلاَمَةً فِي أُمَّتِي، فَإِذَا رَأَيْتُهَا أَكْثَرْتُ مِنْ قَوْلِ سُبْحَانَ اللَّهِ وَبِحَمْدِهِ أَسْتَغْفِرُ اللَّهَ وَأَتُوبُ إِلَيْهِ، فَقَدْ رَأَيْتُهَا: {إِذَا جَاءَ نَصْرُ اللَّهِ وَالْفَتْحُ} فَتْحُ مَكَّةَ {وَرَأَيْتَ النَّاسَ يَدْخُلُونَ فِي دِينِ اللَّهِ أَفْوَاجًا * فَسَبِّحْ بِحَمْدِ رَبِّكَ وَاسْتَغْفِرْهُ إِنَّهُ كَانَ تَوَّابًا}۔»  

Allah sent down His Divine Inspiration to His Apostle continuously and abundantly during the period preceding his death till He took him unto Him. That was the period of the greatest part of revelation; and Messenger of Allah ﷺ died after that.  

أَنَّ اللَّهَ تَعَالَى تَابَعَ عَلَى رَسُولِهِ ﷺ قَبْلَ وَفَاتِهِ حَتَّى تَوَفَّاهُ أَكْثَرَ مَا كَانَ الْوَحْىُ ثُمَّ تُوُفِّيَ رَسُولُ اللَّهِ ﷺ بَعْدُ  

I heard Allah's Apostle ﷺ as saying. Every servant would be raised (in the same very state) in which he dies.  

سَمِعْتُ النَّبِيَّ ﷺ يَقُولُ يُبْعَثُ كُلُّ عَبْدٍ عَلَى مَا مَاتَ عَلَيْهِ