بُلُوغُ الْمَرَامِ
Bulugh al-Maram 898
Business Transactions
وَاخْتُلِفَ فِي وَصْلِهِ وَإِرْسَالِهِ, وَفِي تَعْيِين صَحَابِيِّهِ [1] .
However, there is disagreement regarding whether it is Mawsul (an unbroken chain) or Mursal (missing link after the Tabi'i) as well as the determination of the name of the Companion who heard it from the Prophet (ﷺ).
Sunnah.com reference: Book 7, Hadith 144