حَدَّثَنَا مُحَمَّدُ بْنُ بَشَّارٍ، حَدَّثَنَا مُحَمَّدُ بْنُ عَبْدِ اللَّهِ، حَدَّثَنَا فَرْوَةُ أَبُو يُونُسَ، عَنْ هِلاَلِ بْنِ جُبَيْرٍ، عَنْ أَنَسِ بْنِ مَالِكٍ، قَالَ قَالَ رَسُولُ اللَّهِ ـ صلى الله عليه وسلم ـ ‏"‏ مَنْ أَصَابَ مِنْ شَىْءٍ فَلْيَلْزَمْهُ ‏"‏ ‏.‏

It was narrated that Nafi' said

I used to send trade goods to Sham and Egypt, then I prepared to send trade goods to 'Iraq. I went to 'Aishah, the Mother of the Believers, and said to her: " O Mother of the Believers I used to send trade goods to Sham and I am preparing to send trade goods to 'Iraq." She said: "Do not do that. What is wrong with the way you have been doing it? I heard the Messenger of Allah (ﷺ) say: 'If Allah causes provision to come to one of you through a certain means, he should not leave it unless it changes or deteriorates."