Drawing near to Allah through obligatory and voluntary acts

On the authority of Abū Hurayra, may Allah be pleased with him, who said: The Messenger of Allah ﷺ said: Allah the Exalted has said: Whoever shows enmity to a friend of Mine, I have declared war against him. My servant does not draw near to Me with anything more beloved to Me than what I have made obligatory upon him. My servant continues to draw near to Me with voluntary acts until I love him; and when I love him, I am his hearing with which he hears, his sight with which he sees, his hand with which he strikes, and his foot with which he walks. If he asks Me, I will surely give him; and if he seeks My protection, I will surely protect him.