Hadith: Allah admits to Paradise any Muslim whose goodness is testified to by four people

عن أبي الأسود، قال: قَدِمْتُ المدينة، فَجَلَسْتُ إلى عمر بن الخطاب رضي الله عنه فَمَرَّتْ بهم جَنازة، فَأُثْنِيَ على صاحِبِها خيراً، فقال عمر: وجَبَتْ، ثم مَرَّ بأُخْرَى فَأُثْنِيَ على صاحِبِها خيراً، فقال عمر: وجَبَتْ، ثم مَرَّ بالثالثة، فَأُثْنِيَ على صاحِبِها شَرَّا، فقال عمر: وجَبَتْ، قال أبو الأسود: فقلت: وما وجَبَتْ يا أمير المؤمنين؟ قال: قلت كما قال النبي صلى الله عليه وسلم : «أيُّما مُسلم شَهِد له أربعة بخير، أدخله الله الجنة» فقلنا: وثلاثة؟ قال: «وثلاثة» فقلنا: واثنان؟ قال: «واثنان» ثم لم نَسْأَلْهُ عن الواحد.
[صحيح] - [رواه البخاري]

Abu al-Aswad reported: I came to Madīnah and sat with ‘Umar ibn al-Khattāb (may Allah be pleased with him). A funeral passed by and the deceased was lauded. ‘Umar said: 'Guaranteed.' Then another funeral passed by and the deceased was lauded, whereupon ‘Umar again said: 'Guaranteed.' Then a third funeral passed by and the deceased was dispraised, whereupon ‘Umar said: 'Guaranteed.' I asked: "O Leader of the Believers, what is guaranteed?" He said: "I said what the Prophet (may Allah's peace and blessings be upon him) said: 'Allah admits to Paradise any Muslim whose goodness is testified to by four people.' We said: 'What about three people?' He replied in the affirmative. We said: 'What about two?' He replied in the affirmative. Then we did not ask him about one person.
[Authentic hadith] - [Narrated by Bukhari]

Explanation

A funeral procession passed by ‘Umar ibn al-Khattāb (may Allah be pleased with him) while some people were sitting with him. The people testified to the goodness and righteousness of the deceased, whereupon ‘Umar (may Allah be pleased with him) said: That is confirmed for him. Another funeral passed by and the people testified to the goodness and righteousness of the deceased – just as they did in the first funeral – whereupon ‘Umar (may Allah be pleased with him) said: That is confirmed for him. Then a third funeral passed by and the people testified to the evil condition of the deceased, whereupon ‘Umar (may Allah be pleased with him) said: That is confirmed for him. The statement of ‘Umar (may Allah be pleased with him) confused Abu al-Aswad, so he sought a clarification of its meaning. He,(may Allah be pleased with him) replied that he had said as the Prophet (may Allah's peace and blessings be upon him) said: Paradise is guaranteed for any Muslim whose goodness and righteousness is testified to by four people from among the good and righteous. When the Companions heard that from the Prophet (may Allah's peace and blessings be upon him) they inquired if a person will be among the inhabitants of Paradise if three people testify to his goodness and righteousness, to which he replied in the affirmative. Then they inquired if that will be the case if only two people testify to his goodness and righteousness, to which he also replied in the affirmative. However, they did not ask him if a person will be among the inhabitants of Paradise if only one person testifies to his goodness and righteousness.