Ahsan Allahu ilaykum. My child started doing the eid takbir and an adult present started saying it too, then saying it over and over. I said "it's not eid". The adult replied "it's dhikr it's fine". What's the ruling on that? If it's a bida, which type (sabab, jins, سجقك مز). Jazak Allahu khayr

Ustadh AbdulAziz al-Haqqan

Maybe you are digging too deep? Maybe the adult is playing with the child and mentioning Allah with him so that the child learns the thikr of eid or he encourages him since he saw the child interested in this and enjoying it, and Allah knows best.