According to the Holy Prophet(saws) it is desirable to pray
100 Raka’t Namaaz on 15th Sha'aban,
in 50 sets of 2 Raka’t
each as follows:
In every Raka’t, after the recitation of Soorah Al Faatih’ah, recite Soorah Al Ikhlaas 10 times
.
After the Namaaz recite the following:
(i) Aayaatul Kursee 10 times
ii) Al Faatih’ah 10 times
iii) Subh’aanallah 100 times
According to Imam Jaa’far As Sadiq (A.S.) It is desirable to pray a 6 Rak—a’t Salaat on 15th Shaban,
in 3 sets of 2 Raka’t each, as under:
In every Raka’t recite Surah Al Faatih’ah,
Surah Yaa-Seen,
Surah Al Mulk &
Surah Ikhlass
once in each rakat.
Text, translation and recitation from Duas.org