English translation
2036. Narrated Abū Salama bin 'Abdur-Raḥmān: I asked Abū Sa'īd Al-Khudrī, "Did you hear Allāh's Messenger ﷺ talking about the night of Qadr?" He replied in the affirmative and said, "Once we were in I'tikāf with Allāh's Messenger ﷺ in the middle ten days of (Ramaḍān) and we came out of it in the morning of the twentieth, and Allāh's Messenger ﷺ delivered a Khutbā (religious talk) on the 20th (of Ramaḍān) and said, 'I was informed (of the date) of the night of Qadr (in my dream) but had forgotten it. So, look for it in the odd nights of the last ten nights of the month of Ramaḍān. I saw myself prostrating in mud and water on that night (as a sign of the night of Qadr). So, whoever had been in I'tikāf with Allāh's Messenger ﷺ should return for it.' The people returned to the mosque (for I'tikāf). There was no trace of clouds in the sky. But all of a sudden a cloud came and it rained. Then the Ṣalāt (prayer) was established (they stood for the Ṣalāt) and Allāh's Messenger ﷺ prostrated in mud and water and I saw mud over the forehead and the nose of the Prophet ﷺ."