What does one do if the Fajr adhan is called before he has prayed Witr?

Q: I intended that if I woke up in the middle of the night, I would pray Witr. When I woke up early, I prayed before praying Witr, but time took me before I could pray Witr, and the Fajr adhan was called. Should I pray Witr after the Fajr prayer has begun? Or should I pray Fajr and leave Witr for after the prayer?

A: If the Fajr adhan is called and a person has not prayed Witr, he delays it until the Duha time, after the sun has risen. He prays whatever is easy for him: two, four, or more, in pairs of two. If his habit was three and he did not pray them at night, he prays four in the Duha time with two taslims. If his habit was five and it was not possible for him to do so at night due to illness, sleep, or otherwise, he prays six in the Duha time with three taslims, and so on. This is because the Prophet (peace and blessings be upon him) used to do this if sleep or illness prevented him from his Witr at night. He would pray Witr with eleven rak'ahs, and if illness or sleep prevented him, he would pray twelve rak'ahs during the day. This is what Aisha (may Allah be pleased with her) said, as narrated by the two Shaykhs, al-Bukhari and Muslim, from her. This is what is prescribed for the Ummah, following the example of the Prophet (peace and blessings be upon him).