Sunan Abi Dawud, Hadith 1698

The aforesaid tradition has also been transmitted by Shu’bah through a different chain of narrators to the same effect. The version goes : He said : Make it known for a year. He said this three times. He said: I do not know whether he said “for a year” or “for three years”.

حَدَّثَنَا مُسَدَّدٌ، حَدَّثَنَا يَحْيَى، عَنْ شُعْبَةَ، بِمَعْنَاهُ قَالَ ‏ "‏ عَرِّفْهَا حَوْلاً ‏" ‏ ‏.‏ وَقَالَ ثَلاَثَ مِرَارٍ قَالَ فَلاَ أَدْرِي قَالَ لَهُ ذَلِكَ فِي سَنَةٍ أَوْ فِي ثَلاَثِ سِنِينَ ‏.‏

sunnah.com

also referenced under: Hadith 1702 (DarusSalam)