Sahih al-Bukhari 2437bBook 45, Hadith 13
حَدَّثَنَا عَبْدَانُ، قَالَ أَخْبَرَنِي أَبِي، عَنْ شُعْبَةَ، عَنْ سَلَمَةَ، بِهَذَا قَالَ فَلَقِيتُهُ بَعْدُ بِمَكَّةَ، فَقَالَ لاَ أَدْرِي أَثَلاَثَةَ أَحْوَالٍ أَوْ حَوْلاً وَاحِدًا.
the above narration (Hadith 616) from Ubai bin Ka`b: adding, "I met the sub-narrator at Mecca later on, but he did not remember whether Ka`b had announced what he had found one year or three years."