Sayyid al-Istighfar is the best form of “Istighfar”. It is the best prayer for the forgiveness of sins.Shaddad bin Aus (May Allah be pleased with him) said: The Prophet (?) said, “The best supplication for seeking forgiveness (Sayyidul Istighfar) is to say: ‘Allahumma Anta Rabbi, la ilaha illa Anta, khalaqtani wa ana ‘abduka, wa ana ‘ala ‘ahdika wa...