Sayyiduna Buraydah bin al-Husayb (may Allah be pleased with him) narrates that the Prophet said: "Whoever touches an idol should perform ablution."
Al-Bazzar recorded it; its chain contains a narrator, Salih bin Hayyan, who is da'if (weak).
Hadith Referenceمجمع الزوائد ومنبع الفوائد / كتاب الطهارة / 1273