Awwaabeen Salaat
Time of performance: This Salaat is performed after Maghrib.
Number of Rakaats: The minimum of number of Rakaats is 6 and the maximum is 20 Rakaats. Can be performed in 2 or 4 rakaat units although 2-rakaat unit are preferred. Some Scholars are of the opinion that the 2 Rakaats Sunnat-E-Mukkadah and 2 Rakaats of Nafl can become part of the 6 Rakaats of Awwaabeen Salaat.
Benefits: Hazarat Ammar bin Yasir (R.A) says that the Prophet (Peace be upon him) offered 6 Rakaats after Maghrib himself and said that whosoever offers 6 Rakaats after Maghrib will have all his sins forgiven even if they are as much as the foam on the ocean.
Ref: Nafl Salaah By Mufti A. H.Elias Page 5