Hadith 1671
´Ibn Umar told them that :` A man asked the Messenger of Allah (ﷺ)about prayers at night, and he said: "Two by two, then if one of you fears that dawn will come, let him pray witr with one."
Hadith 1688
´It was narrated from Nafi' that :` Ibn Umar used to pray witr on his camel and he mentioned that the Prophet (ﷺ) used to do that.