The opá iku is used when praying the moyuba (mojuba) on the ancestors, by tapping it on the bottom to get in touch with up Egun being current. From the Yoruba homeland, the tapping of this employees was basically carried out in addition to the graves of the buried ancestors https://marcowejnr.blogsumer.com/28394426/not-known-factual-statements-about-urgent-this-june-30-f-tshisekedi-will-sell