It is narrated from Amr bin Abu Amr, the freed slave of Matlib bin Hatab, that the Prophet ﷺ said: "I have not left anything that Allah has commanded you to do except that I have commanded you to do it, and I have not left anything that Allah has forbidden you from except that I have also forbidden you from it. And indeed, the Trustworthy Spirit (Jibreel عليه السلام) has inspired this into my heart: when death comes to anyone, his sustenance has already been completed. Therefore, do not strive for the world with a broken heart."
Hadith Referenceمسند الإمام الشافعي / كتاب فضائل قريش وغيرهم وأبواب متفرقة / 1798
Hadith Takhrijاخرجه البيهقي : 7 / 76 - وفى شعب الايمان له (1185) وفى المعرفة السنن والآثار له 63/1 - وصححه لالباني في الصحيحة (1803)۔