Although these two Surahs of the Qur'an are separate entities and are written in the Mushaf also under separate names, yet they are so deeply related mutually and their contents so closely resemble each other's that they have been designated by a common name Mu'awwidhatayn (the two Surahs in which refuge with Allah has been sought). Imam Baihaqi in Dala'il an-Nubuwwat has written that these Surahs were revealed together, that is why the combined name of both is Mu'awwidhatayn. We are writing the same one Introduction to both, for they discuss and deal with just the same matters and topics. However, they will be explained and commented on separately below.