Reference: Siyar A’laam an-Nubalaa – Volume 4, Page 48
al-Hasan narrated:
[When] Harim ibn Hayyaan died it was a hot day. So when they had finished with his grave, there came a cloud which stopped over the grave; it was neither longer nor shorter than it (the grave). And it drizzled over it (the grave) until it had drenched it, and then it went away.
