ANSWER: 

Salaat at-tawbah can be prayed whenever one does a particular sin and there is a need. There isn’t any specific surahs to be recited in it. You can recite whatever you want.

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we need to pray everyday salat ul tawba or once in week or wen we r required to pray.is there any specific surahs to be read in this salaat.is it important to pray this salaat every human.