[The obligation of migration :] And immigration stands as its original position. Allāh has no need towards him who secretly accepts belief or him who openly does so. Immigration will not apply to any one unless he recognizes the proof (of Allāh) on the earth. Whoever reco nizes him and acknowledges him would be a muhājir (immigrant). istiḍ‘āf (i.e. freedom from the obligation of immigration) does not apply to him whom the proof (of Allāh) reaches and he hears it and his heart preserves it. [1]