He was present with Umar when Ammar said to him, "We were on a military expedition and became in a state of major ritual impurity," and he mentioned that he spat on them.
حدثنا سليمان بن حرب قال حدثنا شعبة عن الحكم عن ذر
أنه شهد عمر وقال له عمار كنا في سرية فأجنبنا وقال تفل فيهما