What does “budd” indicate in “wajadnā buddan min iʿādatih”?

The Compilation Method: Narrator Tiers, Justified Repetition and Abridgement

• The status of the original report makes repetition obligatory in every case
• Having a way to dispense with repeating it
• An unavoidable requirement to cite each report with only one chain
• An obligation to reproduce every variant in full whenever wording differs