"O Messenger of Allah, tell me of an action that I may do and persist in it." The Messenger of Allah said to him: "You should emigrate, for there is nothing like it." (Using translation from Nasāʾī 4167)  

أَنَّهُ قَالَ يَا رَسُولَ اللهِ حَدِّثْنِي بِعَمَلٍ أَسْتَقِيمُ عَلَيْهِ وَأَعْمَلُهُ قَالَ لِي رَسُولُ اللهِ ﷺ «عَلَيْكَ بِالْهِجْرَةِ فَإِنَّهُ لَا مِثْلَ لَهَا»