(35) The Book of Oaths and Vows
كتاب الأيمان والنذور
(41) Chapter: Expiation For Vows
(41) باب كَفَّارَةِ النَّذْرِ ‏.‏
Sunan an-Nasa'i 3844 
It was narrated that 'Imran said:
The Messenger of Allah said: "There is no vow at a moment of anger and its expiation is the expiation for an oath." It was said: "Az-Zubair did not hear this Hadith from 'Imran bin Husain."
أَخْبَرَنَا قُتَيْبَةُ، أَنْبَأَنَا حَمَّادٌ، عَنْ مُحَمَّدٍ، عَنْ أَبِيهِ، عَنْ عِمْرَانَ، قَالَ قَالَ النَّبِيُّ صلى الله عليه وسلم ‏ "‏ لاَ نَذْرَ فِي غَضَبٍ وَكَفَّارَتُهُ كَفَّارَةُ الْيَمِينِ ‏"‏ ‏.‏ وَقِيلَ إِنَّ الزُّبَيْرَ لَمْ يَسْمَعْ هَذَا الْحَدِيثَ مِنْ عِمْرَانَ بْنِ حُصَيْنٍ ‏.‏
Grade :  Da'if (Darussalam)
Reference : Sunan an-Nasa'i 3844
In-book reference : Book 35, Hadith 84
English translation : Vol. 4, Book 35, Hadith 3875