It is narrated from Sayyiduna Abu Hurayrah (may Allah be pleased with him) that the Messenger of Allah (peace and blessings be upon him) said: "Indeed, Allah, the Blessed and Exalted, will say: 'I was ill and My servants did not visit Me, and I was thirsty and My servants did not give Me water to drink.' (The servant) will say: 'O my Lord! Are You (ill and thirsty)?' Allah will say: 'Yes. My believing servant falls ill; had he been visited, it would have been a visit to Me. And My servant is thirsty in the desert; had he been given water, it would have been given to Me.'"
No one narrated this hadith from Safwan bin Sulaym except Ubaydullah bin Abi Ja'far, and al-Layth is alone in narrating it.
Hadith Referenceالمعجم الأوسط / باب الميم / 8722
Hadith Takhrij«أخرجه مسلم فى «صحيحه» برقم: 2569، وابن حبان فى «صحيحه» برقم: 269، 944، 7366، وأحمد فى «مسنده» برقم: 9365، والطبراني فى «الأوسط» برقم: 5979»