The Prophet (ﷺ) 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."
Sahih al-Bukhari Book 82, Hadith 15
← Previous Hadith The Prophet (ﷺ) forbade vowing and said, "In fact, vowing does not prevent anything, but it makes a miser to spend his property."

Sahih al-Bukhari Book 82, Hadith 14 Next Hadith → While we were with Allah's Messenger (ﷺ) in a holy battle, we never went up a hill or reached its peak or went down a valley but raised our voices with Takbir. Allah's Messenger (ﷺ) came close to us and said, "O people! Don't exert yourselves, for you do not call a deaf or an absent one, but you call the All- Listener, the All-Seer." The Prophet (ﷺ) then said, "O `Abdullah bin Qais! Shall I teach you a sentence which is from the treasures of Paradise? ( It is): 'La haula wala quwata illa billah. (There is neither might nor power except with Allah).

Sahih al-Bukhari Book 82, Hadith 16