Ahmad bin Isa (may Allah have mercy on him) narrated the hadith, and in it there is: They would come through the dust, and dust and sweat would get on them. Some of them came to the Prophet (peace and blessings be upon him) while he (peace and blessings be upon him) was with me.
Hadith Referenceالسنن الكبرى للبيهقي / كتاب الجمعة / 5667