(And when We put a revelation) when We send Gabriel with an abrogating verse (in place of (another) revelation) in place of another abrogated verse, (and Allah knoweth best what He revealeth) and Allah knows the probity of that with which He commands His servants, (they say) the disbelievers of Mecca say: (Lo! thou art but inventing) from yourself, O Muhammad. (Most of them know not) that Allah commands His servants with that which is good for them.