On the authority of Abu Hurayrah may Allah be pleased with him, who said that the Messenger of Allah ﷺ said: Allah - may His Majesty be exalted ! - said:
"Whosoever shows enmity to someone devoted to Me, I shall be at war with him.
"My servant draws not near to Me with anything more loved by Me than the religious duties I have enjoined upon him, and My servant continues to draw near to Me with supererogatory works so that I shall love him.
"When I love him I am his hearing with which he hears, his seeing with which he sees, his hand with which he strikes and his foot with which he walks.
"Were he to ask [something] of Me, I would surely give it to him, and were he to ask Me for refuge, I would surely grant him it. I do not hesitate about anything as much as I hesitate about [seizing] the soul of My faithful servant: he hates death and I hate hurting him."
"Allah said, 'I will declare war against him who shows hostility to a friend* (walī) of Mine.
"And the most beloved things with which My slave comes nearer to Me, is what I have enjoined (frD) upon him; and My slave keeps on coming closer to Me through performing nawāfil (praying or doing extra deeds besides what is obligatory) till I love him,
"so I become his sense of hearing with which he hears, and his sense of sight with which he sees, and his hand with which he grips, and his leg with which he walks;
"and if he asks Me, I will give him, and if he asks My protection (Refuge), I will protect him; (i.e. give him My Refuge) and I do not hesitate to do anything as I hesitate to take the soul of the believer, for he hates death, and I hate to disappoint him."