Q. After fard salaah why do we move away from where we were and read our sunnah/nafl somewhere else? Jazakallah ul Ghair
A. It is not necessary but preferable for one to change his place or move from one place to another after performing a Fardh Salaah to offer his Sunnah/Nafl Salaahs.
This is done to differentiate a congregational Salaah from an individual Salaah as an onlooker may consider an individual Salaah to be a congregational Salaah and thus create confusion. Furthermore, by changing ones place of Salaah after a Fardh Salaah, it will increase the number of places where one makes Sajdah, which will testify in ones favour on the day of Qiyaamah.
In any event, one should not change his place of Salaah if the place in crowded or if it will result in crossing directly in front of a person performing or completing his Salaah. (Al-Asl 1/18/Kitaabul Fataawa 2/356)
Allah Ta’ala Knows Best
Mufti Ismaeel Bassa