Abu Safwan said: I came to the Messenger of Allah ﷺ at Mecca before his immigration. He then narrated the rest of the tradition, but he did not mention the words "who was weighing for payment". Abu Dawud sad: Qais also transmitted it as Sufyan said: The version of Sufyan is authoritative.
أَتَيْتُ رَسُولَ اللَّهِ ﷺ بِمَكَّةَ قَبْلَ أَنْ يُهَاجِرَ بِهَذَا الْحَدِيثِ وَلَمْ يَذْكُرْ يَزِنُ بِالأَجْرِ