Sahih Bukhari
Divine Will (Al-Qadar)
Volume: 008 / Book Number: 077 / Hadith Number: 606
Narrated Abu Huraira:
The Prophet said (that Allah said), "Vowing does not bring to the son of Adam anything I have not already written in his fate, but vowing is imposed on him by way of fore ordainment. Through vowing I make a miser spend of his wealth."