Shaykh al-Kulayni has narrated that Imam Jafar al-Sadiq (as) said to Abu-Said al-Madaini, “May I teach you something that you should recite in Jafar al-tayyar’s Prayer?” As the man answered in the affirmative, the Imam said: After you say the Tasbihat in the second Sajdah of the fourth unit, say the following
سُبْحَانَ مَنْ لَبِسَ ٱلْعِزَّ وَٱلْوَقَار سُبْحَانَ مَنْ تَعَطَّفَ بِٱلْمَجْدِ وَتَكَرَّمَ بِهِ سُبْحَانَ مَنْ لاَ يَنْبَغِي ٱلتَّسْبِيحُ إِلاَّ لَهُ سُبْحَانَ مَنْ احْصَىٰ كُلَّ شَيْءٍ عِلْمُهُ سُبْحَانَ ذِي ٱلْمَنِّ وَٱلنِّعَمِ سُبْحَانَ ذِي ٱلْقُدْرَةِ وَٱلْكَرَمِ اَللَّهُمَّ إِنِّي اسْالُكَ بِمَعَاقِدِ ٱلْعِزِّ مِنْ عَرْشِكَ وَمُنْتَهَىٰ ٱلرَّحْمَةِ مِنْ كِتَابِكَ وَٱسْمِكَ ٱلاعْظَمِ وَكَلِمَاتِكَ ٱلتَّامَّةِ ٱلَّتِي تَمَّتْ صِدْقاً وَعَدْلاًَ صَلِّ عَلَىٰ مُحَمَّدٍ وَاهْلِ بَيْتِهِ… ..
'Dua for Salat-e-Jafar Tayyar' is tagged in Imam Jafar As Sadiq collection. See other dua's from Imam Jafar As Sadiq