Salman Farsi narrates that Prophet Muhammad (peace and blessings upon him and his family) said "O Salmaan, there is no Mumin/Muminah (True Believer/Female Believer) who performs 30 Raka' in the month of Rajab; that Allah does forgive them their sins and bestows rewards upon them as upon a person who has fasted a whole month. He becomes among those who will be steadfast in their salaat in the year which is to come. For him, the deeds of the day are equal to that of the martyr. He will be raised with the Martyrs of the Holy Battle of Badr. For him is written for the fast of each day, one year's worship. His station is raised 1000 times higher.”
He said Jibreel informed me "O Muhammad this is the sign between you and the Mushrikeen (Polytheists) and the Munaafiqeen (Hypocrites) because the Munafiq does not perform this Salaat."
Method of Salaah of 10 units on First,15th and last day of Rajab
10 Raka' ( 2 units each x 5 ).
In each Raka' recite; Surah Al-Fatihah once, Surah Al Ikhlas 3 times and Surah Al Kafiroon 3 times
After Salaam (at the end of EACH 2 units) raise your hands and say the common recitation and the specific recitation for each of the days respectively:
Common ( for 1st,15,Last day)Recitation after the end of Each 2 Rakat.
لاَ إِلٰهَ إِلاَّ ٱللَّهُ
la ilaha illa allahu
There is no god save Allah,
وَحْدَهُ لاَ شَرِيكَ لَهُ
wahdahu la sharika lahu
the One and Only Who has no partner.
لَهُ ٱلْمُلْكُ وَلَهُ ٱلْحَمْدُ
lahu almulku wa lahu alhamdu
To him is the kingdom and to Him is all praise.
yuhyi wa yumitu
He gives life and causes to die
wa huwa hayyun la yamutu
while He is Ever-living and never dies.
biyadihi alkhayru
In His hand is the good
وَهُوَ عَلَىٰ كُلِّ شَيْءٍ قَدِيرٌ
wa huwa `ala kulli shay'in qadirun
and He has power over all things.
1st day of Rajab:The following should be added after first recitation:
اَللَّهُمَّ لاَ مَانِعَ لِمَا أَعْطَيْتَ
allahumma la mani`a lima a`tayta
O Allah, verily, none can ever divest him whom You decide to give,
وَلاَ مُعْطِيَ لِمَا مَنَعْتَ
wa la mu`tiya lima mana`ta
none can ever give him whom You decide to deprive,
وَلاَ يَنْفَعُ ذَا ٱلْجَدِّ مِنْكَ ٱلْجَدَّ
wa la yanfa`u dhaljaddi minka aljadda
and nothing can ever stop that which You decide.
Then, one should pass the hands over the face.
Fifteenth (i.e. middle) of Rajab the following should be added after the first recitation at end of each 2 Rakat::
ilahan wahidan ahadan
The Lord Who is One, One and Only,
fardan samadan
Singular, and Besought by the all,
لَمْ يَتَّخِذْ صَاحِبَةً وَلاَ وَلَداً
lam yattakhidh sahibatan wa la waladan
has betaken neither a wife nor a son.
Then, one should pass the hands over the face and submit his requests.
Last day of Rajab the following is added after the first recitation at end of each 2 Rakat:
وَصَلَّىٰ ٱللَّهُ عَلَىٰ مُحَمَّدٍ وَآلِهِ ٱلطَّاهِرِينَ
wa salla allahu `ala muhammadin wa alihi alttahirina
May Allah send blessings to Muhammad and upon his Household, the Immaculate.
وَلاَ حَوْلَ وَلاَ قُوَّةَ إِلاَّ بِٱللَّهِ ٱلْعَلِيِّ ٱلْعَظِيمِ
wa la hawla wa la quwwata illa billahi al`aliyyi al`azimi
There is neither might nor power save with Allah, the Most High, the All-great.
Then, one should pass the hands over the face and submit his requests.