الصلاة على جعفر الصادق عليه السلام
Salawaat on Imam Ja'far ibn Muhammad (a)
Within the recommended rites on Fridays, Shaykh al-Tusi, in his book of Misbah al-Mutahajjid, has mentioned the following from Imam Hasan Askari (a):
Source: Arabic text, translation and transliteration from duas.org, which also hosts the recitation.
اَللَّهُمَّ صَلِّ عَلَىٰ جَعْفَرِ بْنِ مُحَمَّدٍ ٱلصَّادِقِ
allahumma salli `ala ja`fari bni muhammadin alssadiqi
O Allah, (please) send blessings upon Ja'far the son of Muhammad the veracious,
خَازِنِ ٱلْعِلْمِ
khazini al`ilmi
the treasure of knowledge,
ٱلدَّاعِي إِلَيْكَ بِٱلْحَقِّ
aldda`i ilayka bilhaqqi
the caller to You with the truth,
ٱلنُّورِ ٱلْمُبِينِ
alnnuri almubini
and the manifest light.
اَللَّهُمَّ وَكَمَا جَعَلْتَهُ مَعْدِنَ كَلاَمِكَ وَوَحْيِكَ
allahumma wa kama ja`altahu ma`dina kalamika wa wahyika
O Allah, as You have made him the core of Your words and revelations,
وَخَازِنَ عِلْمِكَ
wa khazina `ilmika
the treasure of Your knowledge,
وَلِسَانَ تَوْحِيدِكَ
wa lisana tawhidika
the spokesman of the profession of Your Oneness,
وَوَلِيَّ أَمْرِكَ
wa waliyya amrika
the authorized to undertake Your mission,
وَمُسْتَحْفَظَ دِينِكَ
wa mustahfaza dinika
and the keeper of Your religion,
فَصَلِّ عَلَيْهِ
fasalli `alayhi
so also (please) send blessings upon him
أَفْضَلَ مَا صَلَّيْتَ عَلَىٰ أَحَدٍ
afdala ma sallayta `ala ahadin
with the most excellent blessings that You have ever sent upon any
مِنْ أَصْفِيَائِكَ وَحُجَجِكَ
min asfiya'ika wa hujajika
of Your elite people and arguments.
إنَّكَ حَمِيدٌ مَجِيدٌ
innaka hamidun majidun
Indeed, You are full of praise, full of glory.