'Umar bin Al-Khattab said
I heard Hisham bin Al-Hakim reciting Surat Al-Furqan during the lifetime of Allah's Messenger (ﷺ). I listened to his recitation and noticed that he recited it in several different ways which Allah's Messenger (ﷺ) had not taught me. So I was about to jump over him during his Salat (prayer) but I waited till he finished his Salat (prayer) whereupon I put, either his upper garment or my upper garment around his neck and seized him by it and asked him, "Who has taught you this Surah?" He replied: "Allah's Messenger (ﷺ) has taught it to me." I said (to him), "You have told a lie! By Allah, Allah's Messenger (ﷺ) has taught me this Surah which I have heard you reciting." So I dragged him to the Allah's Messenger (ﷺ). I said: "O Allah's Messenger I have heard this man reciting Surat Al-Furqan in a way in which you have not taught me, and you did teach me Surah Al-Furqan." On that Allah's Messenger (ﷺ) said, "O 'Umar, release him! Recite, O Hisham". So Hisham recited before him in the way as I heard him reciting. Allah's Messenger (ﷺ) said, "It has been revealed like this." Then Allah's Messenger (ﷺ) said, "Recite, O 'Umar" So recited it. The Prophet (ﷺ) said, "It has been revealed like this." And then he added, "This Qur'an has been revealed to be recited in seven different ways, so recite it whichever way is easier for you."
Narrated `Abdullah
When the Verse:--'Those who believe and did not confuse their belief with wrong (worshipping others besides Allah).' (6.82) was revealed, it was hard on the companions of the Prophet (ﷺ) and they said, "Who among us has not wronged (oppressed) himself?" Allah's Messenger (ﷺ) said, "The meaning of the Verse is not as you think, but it is as Luqman said to his son, 'O my son! Join not in worship others with Allah, Verily! Joining others in worship with Allah is a great wrong indeed.'" (31.13)
Narrated `Itban bin Malik
Once Allah's Messenger (ﷺ) came to me in the morning, and a man among us said, "Where is Malik bin Ad- Dukhshun?" Another man from us replied, "He is a hypocrite who does not love Allah and His Apostle." The Prophet (ﷺ) said, "Don't you think that he says: None has the right to be worshipped but Allah, only for Allah's sake?" They replied, "Yes" The Prophet (ﷺ) said, "Nobody will meet Allah with that saying on the Day of Resurrection, but Allah will save him from the Fire."
Narrated
Abu `Abdur-Rahman and Hibban bin 'Atiyya had a dispute. Abu `Abdur-Rahman said to Hibban, "You know what made your companions (i.e. `Ali) dare to shed blood." Hibban said, "Come on! What is that?" `Abdur-Rahman said, "Something I heard him saying." The other said, "What was it?" `AbdurRahman said, "`Ali said, Allah's Messenger (ﷺ) sent for me, Az-Zubair and Abu Marthad, and all of us were cavalry men, and said, 'Proceed to Raudat-Hajj (Abu Salama said that Abu 'Awana called it like this, i.e., Hajj where there is a woman carrying a letter from Hatib bin Abi Balta'a to the pagans (of Mecca). So bring that letter to me.' So we proceeded riding on our horses till we overtook her at the same place of which Allah's Messenger (ﷺ) had told us. She was traveling on her camel. In that letter Hatib had written to the Meccans about the proposed attached of Allah's Messenger (ﷺ) against them. We asked her, "Where is the letter which is with you?' She replied, 'I haven't got any letter.' So we made her camel kneel down and searched her luggage, but we did not find anything. My two companions said, 'We do not think that she has got a letter.' I said, 'We know that Allah's Messenger (ﷺ) has not told a lie.'" Then `Ali took an oath saying, "By Him by Whom one should swear! You shall either bring out the letter or we shall strip off your clothes." She then stretched out her hand for her girdle (round her waist) and brought out the paper (letter). They took the letter to Allah's Messenger (ﷺ). `Umar said, "O Allah's Messenger (ﷺ)! (Hatib) has betrayed Allah, His Apostle and the believers; let me chop off his neck!" Allah's Messenger (ﷺ) said, "O Hatib! What obliged you to do what you have done?" Hatib replied, "O Allah's Messenger (ﷺ)! Why (for what reason) should I not believe in Allah and His Apostle? But I intended to do the (Mecca) people a favor by virtue of which my family and property may be protected as there is none of your companions but has some of his people (relatives) whom Allah urges to protect his family and property." The Prophet (ﷺ) said, "He has said the truth; therefore, do not say anything to him except good." `Umar again said, "O Allah's Messenger (ﷺ)! He has betrayed Allah, His Apostle and the believers; let me chop his neck off!" The Prophet (ﷺ) said, "Isn't he from those who fought the battle of Badr? And what do you know, Allah might have looked at them (Badr warriors) and said (to them), 'Do what you like, for I have granted you Paradise?' " On that, `Umar's eyes became flooded with tears and he said, "Allah and His Apostle know best."