Prescribed Punishments (Kitab Al-Hudud)
40/1. Chapter:
Ruling on one who apostatizes
Sunan Abi Dawud
حَدَّثَنَا ابْنُ مُعَاذٍ، حَدَّثَنَا أَبِي، حَدَّثَنَا الْمَسْعُودِيُّ، عَنِ الْقَاسِمِ، بِهَذِهِ الْقِصَّةِ قَالَ فَلَمْ يَنْزِلْ حَتَّى ضُرِبَ عُنُقُهُ وَمَا اسْتَتَابَهُ .
The tradition mention above has also been transmitted by Abu Musa through a different chain if narrators. But there is no mention of demand of repentance.
Reference : Sunan Abi Dawud 4357In-book reference : Book 40, Hadith 7English translation : Book 39, Hadith 4343