Imam Maalik مالك بن أنس بن مالك بن أبي عامر · The Book on Al-Witr

"I was with Ibn Umar on a journey and I fell behind him. He said: 'Where were you?' I said: 'I prayed Al-Witr.' He said: 'Is there not a good exampled for you in Allah's Messenger? I saw Allah's Messenger performing Al-Witr on his mount.'"

"No one should sell in our markets except one who has understanding in the religion."