In one narration the wording is: "one hundred years".
Al-Tabarani recorded it. Its chain contains a narrator, Muhammad bin Abd al-Rahman al-Allaf, whom I do not know; the remaining narrators of this report are thiqat (trustworthy).
Hadith Referenceمجمع الزوائد ومنبع الفوائد / كتاب الديات / 10753