The Messenger of Allah ﷺ said, "Patience is at the first shock." I think he said "the first." Abu Qatan was uncertain.
حدثنا أبو قطن حدثنا شعبة عن ثابت
عن رسول الله ﷺ قال الصبر عند الصدمة أراه قال الأولى شك أبو قطن
No references are available.
Its isnad is sahih. Abu Qatan is Amr bin Haytham. The hadith was mentioned previously at 12397.