"My closest friend advised me to do three things: 'To pray witr at the beginning of the night, to pray two rak'ahs of Fajr and to fast three days of each month.'"
"My father, Talq bin 'Ali visited me one day in Ramadan and stayed with us until the evening. He led us in praying Qiyam that night and prayed witr with us. Then he went down to a masjid and led his companions in prayer until only witr was left. Then he told a man to go forward and said to him: 'Lead them in praying witr, for I heard the Messenger of Allah (ﷺ) say: There should not be two witrs in one night."
"I asked 'Aishah about the prayer of the Messenger of Allah (ﷺ). She said: 'He used to sleep during the first part of the night, then get up during the time before dawn and pray witr. Then he would go to his bed and if he needed to be intimate he would go to his wife. Then when he heard the Adhan he would get up, and if he was junub he would pour water over himself, otherwise he would perform wudu, then he would go out to the prayer.'"
أَخْبَرَنَا إِسْحَاقُ بْنُ مَنْصُورٍ، قَالَ حَدَّثَنَا عَبْدُ الرَّحْمَنِ، عَنْ سُفْيَانَ، عَنْ أَبِي حَصِينٍ، عَنْ يَحْيَى بْنِ وَثَّابٍ، عَنْ مَسْرُوقٍ، عَنْ عَائِشَةَ، قَالَتْ أَوْتَرَ رَسُولُ اللَّهِ صلى الله عليه وسلم مِنْ أَوَّلِهِ وَآخِرِهِ وَأَوْسَطِهِ وَانْتَهَى وَتْرُهُ إِلَى السَّحَرِ .
"The Messenger of Allah (ﷺ) prayed witr at the beginning (of the night) and at the end, and in the middle. And toward the end of his life, he settled on performing witr at the end of the night."
He was in the masjid of 'Amr bin Shurahbil and the iqamah for prayer was said, and they were waiting. He came and said: "I was praying witr." Abdullah was asked: "Is there any witr after the adhan?" He said: "Yes, and after the Iqamah." And he narrated that the Prophet (ﷺ) once slept and missed the prayer until the sun had risen, then he prayed.