The Holy prophet (pbuh&hh) says that if a person recites 4 unit prayers on the
night of 7th rajab, (such that in each unit after Surah al Hamd recites Surat at
Tawheed thrice, Surah alFalaq once, Surah an Naas once. After finishing prayers
recites 10 Salwaat &10 times Tasbeehate Arba’).
Allah will offer him shelter under the Arsh, & give him reward of a person
fasting in the month of ramdan. Till the time he finishes the prayers, the
angels pray for his forgiveness. Allah will ease the pangs of death on him &
save him from the squeeze in the grave. He will not die unless he sees his place
in Paradise, & will be safe from the hardships of Qiyamat.
All glory be to Allah;
all praise be to Allah;
there is no god save Allah;
and Allah is the Greatest
Salwaat- O Allah, (Please) send blessings to Muhammad
and the Household of Muhammad,
The reference for this 4 unit prayer is in Iqbal al-A'maal of Sayyid ibn Tawus
vol. 2 p. 261 where he mentions:
10 salawaat and the tasbihaat are to be recited after the completion of the
prayer & not in the prayer itself.