That the Messenger of Allah (ﷺ) said: "There is no vowing for disobedience, and its atonement is the atonement of an oath."
Jami` at-Tirmidhi Book 20, Hadith 1
← Previous Hadith That the Prophet (ﷺ) said: "Whoever sees the crescent of Dhul-Hijjah, and wants to slaughter a sacrifice he should not take from his hair nor from his nails."

Jami` at-Tirmidhi Book 19, Hadith 36 Next Hadith → That the Prophet (ﷺ) said: "There is no vowing in disobedience to Allah, and its atonement is the atonement of an oath."

Jami` at-Tirmidhi Book 20, Hadith 2