Hadith 1: Deeds are by intentions إنما الأعمال بالنيات

Umar ibn al-Khattab reported: The Messenger of Allah, peace and blessings be upon him, said:

إِنَّمَا الْأَعْمَالُ بِالنِّيَّةِ وَإِنَّمَا لِامْرِئٍ مَا نَوَى فَمَنْ كَانَتْ هِجْرَتُهُ إِلَى اللَّهِ وَرَسُولِهِ فَهِجْرَتُهُ إِلَى اللَّهِ وَرَسُولِهِ وَمَنْ كَانَتْ هِجْرَتُهُ لِدُنْيَا يُصِيبُهَا أَوْ امْرَأَةٍ يَتَزَوَّجُهَا فَهِجْرَتُهُ إِلَى مَا هَاجَرَ إِلَيْهِ

Verily, deeds are only with intentions. Verily, every person will have only what they intended. Whoever emigrated to Allah and his messenger, his emigration is for Allah and his messenger. Whoever emigrated to get something in the world or to marry a woman, his emigration is for that to which he emigrated.

Source: Sahih al-Bukhari 54

Hadith 2: Islam, faith, and excellence الإسلام والإيمان والإحسان

Umar ibn al-Khattab reported: We were sitting with the Messenger of Allah, peace and blessings be upon him, one day when a man appeared with very white clothes and very black hair. There were no signs of travel on him and we did not recognize him. He sat down in front of the Prophet and rested his knees by his knees and placed his hands on his thighs. The man said, “O Muhammad, tell me about Islam.” The Prophet said:

الْإِسْلَامُ أَنْ تَشْهَدَ أَنْ لَا إِلَهَ إِلَّا اللَّهُ وَأَنَّ مُحَمَّدًا رَسُولُ اللَّهِ صَلَّى اللَّهُ عَلَيْهِ وَسَلَّمَ وَتُقِيمَ الصَّلَاةَ وَتُؤْتِيَ الزَّكَاةَ وَتَصُومَ رَمَضَانَ وَتَحُجَّ الْبَيْتَ إِنْ اسْتَطَعْتَ إِلَيْهِ سَبِيلًا

Islam is to witness that there is no God but Allah and Muhammad is the Messenger of Allah, to establish prayer, to give the alms, the fast the month of Ramadan, and to perform pilgrimage to the House if he is capable of travel.

The man said, “You have spoken truthfully.” We were surprised that he asked him and then said he was truthful. He said, “Tell me about faith.” The Prophet said:

أَنْ تُؤْمِنَ بِاللَّهِ وَمَلَائِكَتِهِ وَكُتُبِهِ وَرُسُلِهِ وَالْيَوْمِ الْآخِرِ وَتُؤْمِنَ بِالْقَدَرِ خَيْرِهِ وَشَرِّهِ

Faith is to believe in Allah, His angels, His books, His messengers, the Last Day, and to believe in providence, both its good and its evil.

The man said, “You have spoken truthfully. Tell me about excellence.” The Prophet said:

أَنْ تَعْبُدَ اللَّهَ كَأَنَّكَ تَرَاهُ فَإِنْ لَمْ تَكُنْ تَرَاهُ فَإِنَّهُ يَرَاكَ

Excellence is to worship Allah as if you see Him, for you do not see Him but He certainly sees you.

The man said, “Tell me about the final hour.” The Prophet said:

مَا الْمَسْئُولُ عَنْهَا بِأَعْلَمَ مِنْ السَّائِلِ

The one asked does not know more than the one asking.

The man said, “Tell me about its signs.” The Prophet said:

أَنْ تَلِدَ الْأَمَةُ رَبَّتَهَا وَأَنْ تَرَى الْحُفَاةَ الْعُرَاةَ الْعَالَةَ رِعَاءَ الشَّاءِ يَتَطَاوَلُونَ فِي الْبُنْيَانِ

The servant girl will give birth to her mistress and you will see barefoot, naked, and destitute shepherds compete in constructing tall buildings.

Then, the man left and I remained. The Prophet said to me:

يَا عُمَرُ أَتَدْرِي مَنْ السَّائِلُ

O Umar, do you know who he was?

I said, “Allah and His messenger know best.” The Prophet said:

فَإِنَّهُ جِبْرِيلُ أَتَاكُمْ يُعَلِّمُكُمْ دِينَكُمْ

Verily, he was Gabriel who came to teach you your religion.

Source: Sahih Muslim 8

Hadith 3: Pillars of Islam أركان الإسلام

Ibn Umar reported: The Messenger of Allah, peace and blessings be upon him, said:

بُنِيَ الْإِسْلَامُ عَلَى خَمْسٍ عَلَى أَنْ يُعْبَدَ اللَّهُ وَيُكْفَرَ بِمَا دُونَهُ وَإِقَامِ الصَّلَاةِ وَإِيتَاءِ الزَّكَاةِ وَحَجِّ الْبَيْتِ وَصَوْمِ رَمَضَانَ

Islam is built upon five: to worship Allah and to disbelieve in what is worshiped besides him, to establish prayer, to give charity, to perform Hajj pilgrimage to the house, and to fast the month of Ramadan.

Source: Sahih al-Bukhari 8

Hadith 4: Providence القضاء والقدر

Abdullah ibn Masud reported: The Messenger of Allah, peace and blessings be upon him, said:

إِنَّ أَحَدَكُمْ يُجْمَعُ خَلْقُهُ فِي بَطْنِ أُمِّهِ أَرْبَعِينَ يَوْمًا ثُمَّ يَكُونُ فِي ذَلِكَ عَلَقَةً مِثْلَ ذَلِكَ ثُمَّ يَكُونُ فِي ذَلِكَ مُضْغَةً مِثْلَ ذَلِكَ ثُمَّ يُرْسَلُ الْمَلَكُ فَيَنْفُخُ فِيهِ الرُّوحَ وَيُؤْمَرُ بِأَرْبَعِ كَلِمَاتٍ بِكَتْبِ رِزْقِهِ وَأَجَلِهِ وَعَمَلِهِ وَشَقِيٌّ أَوْ سَعِيدٌ فَوَالَّذِي لَا إِلَهَ غَيْرُهُ إِنَّ أَحَدَكُمْ لَيَعْمَلُ بِعَمَلِ أَهْلِ الْجَنَّةِ حَتَّى مَا يَكُونُ بَيْنَهُ وَبَيْنَهَا إِلَّا ذِرَاعٌ فَيَسْبِقُ عَلَيْهِ الْكِتَابُ فَيَعْمَلُ بِعَمَلِ أَهْلِ النَّارِ فَيَدْخُلُهَا وَإِنَّ أَحَدَكُمْ لَيَعْمَلُ بِعَمَلِ أَهْلِ النَّارِ حَتَّى مَا يَكُونُ بَيْنَهُ وَبَيْنَهَا إِلَّا ذِرَاعٌ فَيَسْبِقُ عَلَيْهِ الْكِتَابُ فَيَعْمَلُ بِعَمَلِ أَهْلِ الْجَنَّةِ فَيَدْخُلُهَا

Verily, the creation of each one of you is brought together in his mother’s womb for forty days as a drop, then he is a clot for a similar period, then a morsel for a similar period, then there is sent to him the angel who blows the spirit into him and he is commanded regarding four matters: to write down his provision, his life span, his deeds, and whether he is blessed or damned. By Allah other than whom there is no God, one of you acts like the people of Paradise until he is but an arm’s length from it, and what is written overtakes him so he acts like the people of Hellfire and he enters it. Verily, one of you acts like the people of Hellfire until he is but an arm’s length from it, and what is written overtakes him so he acts like the people of Paradise and he enters it.

Source: Sahih al-Bukhari 7016