Qur'an 28:30

فَلَمَّآ أَتَىٰهَا نُودِىَ مِن شَـٰطِئِ ٱلْوَادِ ٱلْأَيْمَنِ فِى ٱلْبُقْعَةِ ٱلْمُبَـٰرَكَةِ مِنَ ٱلشَّجَرَةِ أَن يَـٰمُوسَىٰٓ إِنِّىٓ أَنَا ٱللَّهُ رَبُّ ٱلْعَـٰلَمِينَ

And when he reached it, he was called from the right side of the valley in the blessed field, from the tree: O Moses! Lo! I, even I, am Allah, the Lord of the Worlds;