《新唐书·列传·卷一百四十》
于是将贺鲁押到昭陵，祭告以后赦而未诛。
于是执而献昭陵，赦不诛。
Helu was then taken to Zhaoling (Mausoleum of the First Tang Emperor Gaozu), where he was pardoned after an offering sacrifice. However, he was not executed.