Abu Hurairah reported,

The Prophet ﷺ reported that Allah said, "I fell ill and the son of Adam did not visit Me. I grew thirsty and the son of Adam did not give Me to drink."I asked, "Do You fall ill, my Lord?"He replied, "A servant from among My servants on earth falls ill and is not visited. Had he visited him, his visit would have been to Me. And he grows thirsty on earth and is not given drink. Had he given him drink, what he gave him would have been for Me."

حدثنا موسى بن داود قال حدثنا ابن لهيعة عن عبيد الله بن أبي جعفر عن سعيد بن أبي سعيد عن أبيه

عن أبي هريرة

عن النبي ﷺ عن الله عز وجل أنه قال مرضت فلم يعدني ابن آدم وظمئت فلم يسقني ابن آدم فقلت أتمرض يا رب قال يمرض العبد من عبادي ممن في الأرض فلا يعاد فلو عاده كان ما يعوده لي ويظمأ في الأرض فلا يسقى فلو سقي كان ما سقاه لي