Hudhayfah reported: We were sitting with the Prophet, peace and blessings be upon him, and he said, “I surely do not know how much longer I will remain with you. After me, follow these two,” and the Prophet pointed to Abu Bakr and Umar.
Source: Sunan al-Tirmidhī 3663
Grade: Hasan (fair) according to Al-Tirmidhi
عَنْ حُذَيْفَةَ قَالَ كُنَّا جُلُوسًا عِنْدَ النَّبِيِّ صَلَّى اللَّهُ عَلَيْهِ وَسَلَّمَ فَقَالَ إِنِّي لَا أَدْرِي مَا بَقَائِي فِيكُمْ فَاقْتَدُوا بِاللَّذَيْنِ مِنْ بَعْدِي وَأَشَارَ إِلَى أَبِي بَكْرٍ وَعُمَرَ
3663 سنن الترمذي كِتَاب الْمَنَاقِبِ اقتدوا باللذين من بعدي أبي بكر وعمر
المحدث الترمذي خلاصة حكم المحدث حسن في سنن الترمذي 6/133