Sahih al-Bukhari, Hadith 6642 ⓘ
Narrated `Abdullah bin Masud: While Allah's Messenger was sitting, reclining his back against a Yemenite leather tent he said to his companions, "Will you be pleased to be one-fourth of the people of Paradise?" They said, 'Yes.' He said "Won't you be pleased to be one-third of the people of Paradise" They said, "Yes." He said, "By Him in Whose Hand Muhammad's soul is, I hope that you will be one-half of the people of Paradise."
حَدَّثَنِي أَحْمَدُ بْنُ عُثْمَانَ، حَدَّثَنَا شُرَيْحُ بْنُ مَسْلَمَةَ، حَدَّثَنَا إِبْرَاهِيمُ، عَنْ أَبِيهِ، عَنْ أَبِي إِسْحَاقَ، سَمِعْتُ عَمْرَو بْنَ مَيْمُونٍ، قَالَ حَدَّثَنِي عَبْدُ اللَّهِ بْنُ مَسْعُودٍ ـ رضى الله عنه ـ قَالَ بَيْنَمَا رَسُولُ اللَّهِ صلى الله عليه وسلم مُضِيفٌ ظَهْرَهُ إِلَى قُبَّةٍ مِنْ أَدَمٍ يَمَانٍ إِذْ قَالَ لأَصْحَابِهِ " أَتَرْضَوْنَ أَنْ تَكُونُوا رُبُعَ أَهْلِ الْجَنَّةِ ". قَالُوا بَلَى. قَالَ " أَفَلَمْ تَرْضَوْا أَنْ تَكُونُوا ثُلُثَ أَهْلِ الْجَنَّةِ ". قَالُوا بَلَى. قَالَ " فَوَالَّذِي نَفْسُ مُحَمَّدٍ بِيَدِهِ، إِنِّي لأَرْجُو أَنْ تَكُونُوا نِصْفَ أَهْلِ الْجَنَّةِ ".
also referenced under: Book 83, Hadith 21 (In-Book) & Volume 8, Book 78, Hadith 637 (USC-MSA)