Al-Furqan 25:60

Wa-itha qeela lahumu osjudoo lirrahmaniqaloo wama arrahmanu anasjudulima ta/muruna wazadahum nufoora

And when it is said to them, "Prostrate to the Most Merciful," they say, "And what is the Most Merciful? Should we prostrate to that which you order us?" And it increases them in aversion.

And when it is said to them, “Prostrate yourselves to the RaHmān (the All-Merciful, Allah),” they say “What is RaHmān? Shall we prostrate ourselves to the one to whom you direct us?” And it increases nothing in them except aversion.