Mishkat al-Masabih, hadith 2670

وَعَنْ نَافِعٍ قَالَ: كُنْتُ أُجَهِّزُ إِلَى الشَّامِ وَإِلَى مِصْرَ فَجَهَّزْتُ إِلَى الْعِرَاقِ فَأَتَيْتُ إِلَى أُمِّ الْمُؤْمِنِينَ عَائِشَةَ فَقُلْتُ لَهَا: يَا أُمَّ الْمُؤْمِنِينَ كُنْتُ أُجَهِّزُ إِلَى الشَّامِ فَجَهَّزْتُ إِلَى العراقِ فقالتْ: لَا تفعلْ مالكَ وَلِمَتْجَرِكَ؟ فَإِنِّي سَمِعْتُ رَسُولَ اللَّهِ صَلَّى اللَّهُ عَلَيْهِ وَسَلَّمَ يَقُولُ: «إِذَا سَبَّبَ اللَّهُ لِأَحَدِكُمْ رِزْقًا مِنْ وَجْهٍ فَلَا يَدَعْهُ حَتَّى يَتَغَيَّرَ لَهُ أَوْ يَتَنَكَّرَ لَهُ» . رَوَاهُ أَحْمَدُ وَابْنُ مَاجَه

Nafi' said he used to fit out business expeditions to Syria and to Egypt. Having fitted out one to ‘Iraq he went to ‘A’isha, the mother of the faithful, and told her that he had been accustomed to fit out expeditions to Syria, and now he had done so to ‘Iraq. She told him not to do so, asking him what was the matter with the place with which he had traded, for she had heard God's Messenger say, “When God has appointed provision for any of you in a particular direction he should not give it up till it changes for the worse.”* Ahmad and Ibn Majah transmitted it. * Alternatives are given for this last phrase. They amount to the same thing, and so it may be understood that there was doubt as to which word was used. It reads hatta yataghayyara lahu au yatanahhara lahu. But it has been suggested that the first verb refers to lack of profit and the second to loss of capital. Cf. Mirqat, iii, 299.