It is narrated from Sayyiduna Abu Ayyub al-Ansari (may Allah be pleased with him): It was said: O Messenger of Allah, there are some people here who recite aloud in the daytime prayer. the Messenger of Allah (peace and blessings be upon him) said to them: "Do you not pelt them with dung?"
Hadith Referenceالمعجم الكبير للطبراني / باب الخاء / 3881