But one of them who had some knowledge of the Book said, "I will bring it to you in the twinkling of an eye." When Solomon saw it placed before him, he exclaimed, "This is by the grace of my Lord, to test whether I am grateful or ungrateful. Whosoever is grateful, it is for the good of his own self; and whosoever is ungrateful, then surely my Lord is self-sufficient and generous."