Abdullah bin Amr and Abdullah bin Umar met. Then Abdullah bin Umar came back weeping, and the people asked him, "What makes you weep, Abu Abdul-Rahman?"He replied, "This man here just told me that he heard the Messenger of Allah ﷺ say, 'No one shall enter Paradise who has in his heart even a mustard seed's weight of arrogance.'"
حدثنا يعلى بن عبيد
التقى عبد الله بن عمرو وعبد الله بن عمر ثم أقبل عبد الله بن عمر وهو يبكي فقال له القوم ما يبكيك يا أبا عبد الرحمن قال الذي حدثني هذا قال سمعت رسول الله ﷺ يقول لا يدخل الجنة إنسان في قلبه مثقال حبة من خردل من كبر
Its isnad is sahih. Abu Hayan, with a fatha on the unpointed ha and a doubled ya, is Yahya bin Saeed bin Hayan Taymi, whose reliability was established earlier at 5007. His father is Saeed bin Hayan Taymi, from Taym Rabab, the Kufan, who is a trustworthy successor (tabii thiqah). Ibn Hibban and Ajli both confirmed his reliability, and Bukhari gave his biography in al-Kabir 2/1/423.Haythami mentioned this hadith in Majma al-Zawaid 1:98 by way of the other route that follows, on the authority of Abu Salama bin Abdul-Rahman at 7015, then referred briefly to this present narration, saying, "And in another narration from Ahmad, sahih," and so on. Munziri did likewise in al-Targhib wal-Tarhib 4:18, citing that narration as attributed to Ahmad, then referring briefly to this present narration, saying, "And in another of his narrations as well, its narrators are those of the Sahih."This requires correction, because Saeed bin Hayan was not narrated from by either of the two sheikhs (Bukhari and Muslim), nor by either one of them alone. So among the people of this discipline, he cannot be described as one of the narrators of the Sahih, even though he is trustworthy and his hadith is sahih.See what has already passed in the Musnad of Ibn Masud at 3789, 3913, 3947, and 4310.