Hadithcore
Sunan an-Nasa'i, 4499
sahih· Darussalam

It was narrated that Ibn 'Umar said:

"The Messenger of Allah (ﷺ) forbade meeting traders on the way, until one enters the market with them?" Abu Usamah acknowledged it and said: Yes.

أَخْبَرَنَا إِسْحَاقُ بْنُ إِبْرَاهِيمَ، قَالَ قُلْتُ لأَبِي أُسَامَةَ أَحَدَّثَكُمْ عُبَيْدُ اللَّهِ عَنْ نَافِعٍ عَنِ ابْنِ عُمَرَ قَالَ نَهَى رَسُولُ اللَّهِ صلى الله عليه وسلم عَنْ تَلَقِّي الْجَلَبِ حَتَّى يَدْخُلَ بِهَا السُّوقَ فَأَقَرَّ بِهِ أَبُو أُسَامَةَ وَقَالَ نَعَمْ ‏.‏

References2 variants
In-Book Reference
Book 44, Hadith 51
English Reference
Vol. 1, Book 8, Hadith 4503