Narrated Abu Said Al-Khudri:

A Bedouin asked Allah's Apostle about the emigration. The Prophet ﷺ said, "May Allah have mercy on you! The matter of emigration is very hard. Have you got camels? Do you pay their Zakat?" The Bedouin said, "Yes, I have camels and I pay their Zakat." The Prophet ﷺ said, Work beyond the seas and Allah will not decrease (waste) any of your good deeds." (See Hadith No. 260 Vol. 5).

حَدَّثَنَا عَلِيُّ بْنُ عَبْدِ اللَّهِ، حَدَّثَنَا الْوَلِيدُ بْنُ مُسْلِمٍ، حَدَّثَنَا الأَوْزَاعِيُّ، قَالَ حَدَّثَنِي ابْنُ شِهَابٍ، عَنْ عَطَاءِ بْنِ يَزِيدَ، عَنْ أَبِي سَعِيدٍ الْخُدْرِيِّ ـ رضى الله عنه ـ أَنَّ أَعْرَابِيًّا سَأَلَ رَسُولَ اللَّهِ ﷺ عَنِ الْهِجْرَةِ فَقَالَ " وَيْحَكَ، إِنَّ شَأْنَهَا شَدِيدٌ، فَهَلْ لَكَ مِنْ إِبِلٍ تُؤَدِّي صَدَقَتَهَا ". قَالَ نَعَمْ. قَالَ " فَاعْمَلْ مِنْ وَرَاءِ الْبِحَارِ فَإِنَّ اللَّهَ لَنْ يَتِرَكَ مِنْ عَمَلِكَ شَيْئًا ".