Hadith 516140
Chapter 46: The Decree - كتاب القدر
وَحَدَّثَنِي عَنْ مَالِكٍ، أَنَّهُ بَلَغَهُ أَنَّهُ كَانَ يُقَالُ إِنَّ أَحَدًا لَنْ يَمُوتَ حَتَّى يَسْتَكْمِلَ رِزْقَهُ فَأَجْمِلُوا فِي الطَّلَبِ .
Yahya related to me from Malik that he heard that this was said "No one will die until his provision is completed for him, so behave correctly in your seeking it."
Reference Muwatta Malik 516140
USC-MSA web (English) reference : Book 46, Hadith 10