The Prophet ﷺ asked AbuBakr: When do you observe the witr? He replied: I observe the witr prayer in the early hours of the night. The Prophet ﷺ asked Umar: When do you observe the witr? He replied: At the end of the night. He then said to AbuBakr: This has followed it with care; and he said to Umar: He has followed it with strength.  

أَنَّ النَّبِيَّ ﷺ قَالَ لأَبِي بَكْرٍ مَتَى تُوتِرُ قَالَ أُوتِرُ مِنْ أَوَّلِ اللَّيْلِ وَقَالَ لِعُمَرَ مَتَى تُوتِرُ قَالَ آخِرَ اللَّيْلِ فَقَالَ لأَبِي بَكْرٍ أَخَذَ هَذَا بِالْحَزْمِ وَقَالَ لِعُمَرَ أَخَذَ هَذَا بِالْقُوَّةِ  

[Machine] The Prophet ﷺ said to Abu Bakr, "When do you perform the Witr prayer?" He said, "I perform it before I sleep." And he said to Umar, "When do you perform the Witr prayer?" He said, "I sleep first and then perform it." The Prophet ﷺ said to Abu Bakr, "You have chosen certainty" or "the definite way." And he said to Umar, "You have chosen strength."  

أَنَّ النَّبِيَّ ﷺ قَالَ لِأَبِي بَكْرٍ «مَتَى تُوتِرُ؟» قَالَ أُوتِرُ قَبْلَ أَنْ أَنَامَ وَقَالَ لِعُمَرَ «مَتَى تُوتِرُ؟» قَالَ أَنَامُ ثُمَّ أُوتِرُ فَقَالَ لِأَبِي بَكْرٍ «أَخَذْتَ بِالْجَزْمِ» أَوْ بِالْوَثِيقَةِ وَقَالَ لِعُمَرَ «أَخَذْتَ بِالْقُوَّةِ»