The narration pertaining to these ten companions is recorded by Ahmad (1/193) and At-Tirmithee (no. 3747). ‘Abdur-Rahmaan Ibn ‘Awf (radiallahu anhu) narrated that the Prophet (salallahu alayhi wassalam) said:
أَبُو بَكْرٍ فِي الْجَنَّةِ وَعُمَرُ فِي الْجَنَّةِ وَعَلِيٌّ فِي
الْجَنَّةِ وَعُثْمَانُ فِي الْجَنَّةِ وَطَلْحَةُ فِي الْجَنَّةِ
وَالزُّبَيْرُ فِي الْجَنَّةِ وَعَبْدُ الرَّحْمَنِ بْنُ عَوْفٍ فِي
الْجَنَّةِ وَسَعْدُ بْنُ أَبِي وَقَّاصٍ فِي الْجَنَّةِ وَسَعِيدُ بْنُ
زَيْدِ بْنِ عَمْرِو بْنِ نُفَيْلٍ فِي الْجَنَّةِ وَأَبُو عُبَيْدَةَ
بْنُ الْجَرَّاحِ فِي الْجَنَّةِ
Abu Bakr is in Paradise, ‘Umar is in Paradise, ‘Alee is in Paradise,
‘Uthmaan is in Paradise, Talhah is in Paradise, Az-Zubayr is in
Paradise, ‘Abdur-Rahmaan Ibn ‘Awf is in Paradise, Sa’d Ibn Abee
Waqqaas is in Paradise, Sa’eed Ibn Zayd Ibn ‘Amr Ibn Nufayl is in
Paradise, and Abu ‘Ubaydah Ibn Al-Jarraah is in Paradise.
It also has other supporting narrations by way of Sa’d Ibn Zaid (radiallahu anhu) from Ahmad (1/187-188) and At-Tirmithee (no. 3747).