أَخْبَرَنَا عَمْرُو بْنُ عَلِيٍّ، قَالَ حَدَّثَنَا مُحَمَّدُ بْنُ جَعْفَرٍ، قَالَ حَدَّثَنَا شُعْبَةُ، عَنْ ثَابِتٍ، قَالَ سَمِعْتُ أَنَسًا، يَقُولُ قَالَ رَسُولُ اللَّهِ صلى الله عليه وسلم ‏"‏ الصَّبْرُ عِنْدَ الصَّدْمَةِ الأُولَى ‏"‏ ‏.‏

It was narrated that Thabit said: "I heard Anas say: 'The Messenger of Allah said: True patience is that which comes at the first blow."' Translation Not Available

Book Ref: Sunan An Nisai Book 21 Hadith 1869
Web Ref:  Sunan An Nisai Vol 3 Book 21 Hadith 1870