Ma'arif al-Qur'an
Mufti Muhammad Shafiوَالَّذِينَ آمَنُوا وَعَمِلُوا الصَّالِحَاتِ لَنُبَوِّئَنَّهُم مِّنَ الْجَنَّةِ غُرَفًا تَجْرِي مِن تَحْتِهَا الْأَنْهَارُ خَالِدِينَ فِيهَا (And those who believe and do righteous deeds, We shall accommodate them in mansions of the Paradise beneath which rivers flow, where they will live forever - 29:58).
The other risk involved in hijrah (migration) is about the arrangement of sustenance in the strange land. One does manage the sustenance at one's own place through employment, trade, cultivation, or inherited land, but on migration all that is left behind. So, how would he manage the sustenance in the new environment? Answer to this apprehension is given in the next three verses by saying that you regard the mundane possessions and arrangements as the cause of your sustenance, but who has given you all this? It is your mistake to consider that you have arranged it all on your own. Without the help and will of Allah nothing could be procured. If He wills, one gets unlimited sustenance without any visible means, and if He does not, then despite all sorts of visible means, one does not get anything. For elaborating this point first it is said: