Sahih al-Bukhari 2437b
Sahih al-Bukhari · Book 45: Lost Things Picked up by Someone (Luqatah) · Should one pick up a fallen thing?
Narrated Salama:
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."