At the beginning of each month and on the first day, a two-unit prayer may be offered. In the first unit, Sura al-Fatiha is recited once and Sura al-Tawhid repeated thirty times. In the second, Sura al-Fatiha is recited once and Sura al-Qadr repeated thirty times. After completing it, alms should be given. One who does so will gain safety throughout that month.
[Al-Hurr al-`Amili, Wasa’il al-Shi`ah 5:286.]