1st:
Closeness to the Holy Prophet (PBUH) on the final day.HAZRAT ABDULLAH IBN MA'SUD (R.A) NARRATES THAT SAYYIDINA RASULULLAH (S.A.W) SAID .
"ON THE DAY OF Qiyamah the person closest to me will be the one who has send the most Durood unto me."(Tirmidhi)
2nd Benefit: " presentation of Durood to Prophet (PBUH) on Friday.
" On Friday, send Durood abundantly on me, as it is presented before me." (Abu Dawud)
3rd:
Rising of one's status by ten times.Abdullah bin 'Amr bin Al-'As (R.A) reported : I heard that messager of Allah saying "whoever suppicates Allah to exalt for me, Allah would exalt him ten times." ( Muslim)