Jo shakhs koi gunah kar baithe to woh acchi tarah wazu kare, 

phir khada hokar do rak-at namaz parhay

Allah taala se mafi mangay to Allah taala usay maaf kar deta hai

Sahih. Abu Dawud (1521), Tirmidhi (406), Ibn Majah (1395). Albani ne ise Hasan kaha hai: Sahih Abu Dawud (5:252, no. 1361)