Ramadan: Durood-e-Ibarahim?

there are many versions of daroods ......and breifest complete is that ...only up to ale muhammed .......but shias have faith in daroode abrahimi ....as it is the basis of completion of prophethood .....why ale abrahim all prophets ...all a s and ashabe abrahim wa ale abrahim are r a despites that ashababs are older than ale abrahim....in age ...this is the law of allah .....thats why for ale muhammed ....a s ....for ashabe muhammed ra....