I'tikaf Timing

"Narrated Abdullah bin Umar:\n\nAllah's Messenger (ﷺ) used to practice I'tikaf in the last ten days of the month of Ramadan.\n\nNarrated Aisha:\n\nThe Prophet (ﷺ) used to practice I'tikaf in the last ten days of Ramadan till he died and then his wives used to practice I'tikaf after him.\n\nNarrated Abu Sa'id Al-Khudri:\n\nAllah's Messenger (ﷺ) used to practice I'tikaf in the middle ten days of Ramadan and once he stayed in I'tikaf till the night of the twenty-first and it was the night in the morning of which he used to come out of his I'tikaf. The Prophet (ﷺ) said, \"Whoever was in I'tikaf with me should stay in I'tikaf for the last ten days, for I was informed of the date of the Night of Qadr but I have been caused to forget it. In the dream I saw myself prostrating in mud and water in the morning of that night. So, look for it in the last ten nights and in the odd ones of them.\" It rained that night and the roof of the mosque dribbled as it was made of leaf stalks of date-palms. I saw with my own eyes the mark of mud and water on the forehead of the Prophet in the morning of the twenty-first.\n\nNarrated Abu Salama bin Abdur-Rahman:\n\nI asked Abu Sa'id Al-Khudri, \"Did you hear Allah's Messenger (ﷺ) talking about the Night of Qadr?\" He replied in the affirmative and said, \"Once we were in I'tikaf with Allah's Messenger (ﷺ) in the middle ten days of Ramadan and we came out of it in the morning of the twentieth. Allah's Messenger (ﷺ) delivered a sermon on the twentieth 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 Ramadan. 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'tikaf with Allah's Messenger (ﷺ) should return for it.' The people returned to the mosque for I'tikaf. There was no trace of clouds in the sky, but all of a sudden a cloud came and it rained. Then the prayer was established and Allah's Messenger (ﷺ) prostrated in mud and water, and I saw mud over the forehead and the nose of the Prophet.\n\nNarrated Abu Sa'id:\n\nWe practiced I'tikaf with Allah's Messenger (ﷺ) in the middle ten days of Ramadan. In the morning of the twentieth we shifted our baggage, but Allah's Messenger (ﷺ) came to us and said, \"Whoever was in I'tikaf should return to his place of I'tikaf, for I saw this Night of Qadr and saw myself prostrating in mud and water.\" When I returned to my place the sky was overcast with clouds and it rained. The mosque, which was roofed with leafstalks of date palm trees, leaked with rain, and I saw the trace of mud and water over the nose of the Prophet (ﷺ) and its tip."