Jabir reported Allah's Messenger ﷺ as saying, "If anyone is afraid that he may not get up in the latter part of the night, he should observe a witr in the first part of it; and if anyone is eager to get up in the last part of it he should observe a witr at the end of the night, for prayer at the end of the night is attended by the angels, and that is most excellent.” Muslim transmitted it.