Narrated Ibn `Abbas:
I stayed overnight in the house of my aunt Maimuna. Allah's Messenger (ﷺ) talked with his wife for a while and then went to bed. When it was the last third of the night, he got up and looked towards the sky and said: "Verily! In the creation of the Heavens and the Earth and in the alteration of night and day, there are indeed signs for men of understanding." (3.190) Then he stood up, performed ablution, brushed his teeth with a Siwak, and then prayed eleven rak`at. Then Bilal pronounced the Adhan (i.e. call for the Fajr prayer). The Prophet (ﷺ) then offered two rak`at (Sunna) prayer and went out (to the Mosque) and offered the (compulsory congregational) Fajr prayer.
Narrated Ibn `Abbas:
Once I stayed overnight at the house of Maimuna and the Prophet (ﷺ) was there with her. When it was the last third of the night, or some part of the night, the Prophet (ﷺ) got up looking towards the sky and recited: 'Verily! In the creation of the heavens and the earth, and in the alternation of Night and Day, there are indeed signs for men of u understanding.' (3.190)
Ibn 'Abbas reported that he spent a night at the house of the Messenger of Allah (ﷺ), The Messenger of Allah (way peace be upon him) got up for prayer in the latter part of the night. He went out and looked towards the sky and then recited this verse (190th) of AI-i-'Imran:" Verily in the creation of the heavens and the earth and the alternation of night and day." up to the (words)" save us from the torment of Hell." He then returned to his house, used the tooth-stick, performed the ablution, and then got up and offered the prayer. He than lay down on the bed. and again got up and went out and looked towards the sky and recited this verse (mentioned above), then returned, used the tooth-stick, performed ablution and again offered the prayer.
`Abdullah b. `Abbas reported: He spent (one night) in the house of the Messenger of Allah (ﷺ). He (the Holy Prophet) got up, brushed his teeth and performed ablution and said: "In the creation of the heavens and the earth, and the alternation of the night and the day, there are indeed signs for people of understanding" (al-Qur'an, iii. 190), to the end of the Surah. He then stood up and prayed two rak`ahs, standing, bowing and prostrating himself at length in them. Then he finished, went to sleep and snored. He did that three times, six rak`ahs altogether, each time cleaning his teeth, performing ablution, and reciting these verses. Then he observed three rak`ahs of Witr. The Mu'adhdhin then pronounced the Adhan and he went out for prayer and was saying: "O Allah! place light in my heart, light in my tongue, place light in my hearing, place light in my eyesight, place light behind me, and light in front of me, and place light above me, and light below me. O Allah! grant me light."