The Master of Humanity and Jinn [Sayyid al-Kawnayn] SallAllahu Alayhi wa Aalihi wa Sallam said,
"Recitation of Durūd upon me is Nūr for you on the bridge of Sirāt. Whoever recites eighty Durūd upon me on the day of Friday, eighty years [worth] of his sins will be forgiven."
*Sirāt: This bridge is built over Hell. Everyone who wishes to enter the Heavens must successfully cross it. It is said to be sharper than a sword and finer than a hair.