Ibn 'Abbas said, "A man said, to the Prophet, 'Whatever Allah wills and you will.' He said, 'You have put an equal with Allah. It is what Allah alone wills.'"  

قَالَ رَجُلٌ لِلنَّبِيِّ ﷺ مَا شَاءَ اللَّهُ وَشِئْتَ قَالَ جَعَلْتَ لِلَّهِ نِدًّا مَا شَاءَ اللَّهُ وَحْدَهُ