Endurance is to be shown at the first blow.  

قَالَ رَسُولُ اللَّهِ ﷺ الصَّبْرُ عِنْدَ الصَّدْمَةِ الأُولَى  

Fear Allah and show endurance. She (not recognising him) said: You have not been afflicted as I have been. When he (the Holy Prophet) had departed, it was said to her that he was the Messenger of Allah ﷺ, she was mortally shocked. She came to his door and she did not find doorkeepers at his door. She said: Messenger of Allah. I did not recognise you. He said: Endurance is to be shown at first blow, or at the first blow.  

أَنَّ رَسُولَ اللَّهِ ﷺ أَتَى عَلَى امْرَأَةٍ تَبْكِي عَلَى صَبِيٍّ لَهَا فَقَالَ لَهَا اتَّقِي اللَّهَ وَاصْبِرِي فَقَالَتْ وَمَا تُبَالِي بِمُصِيبَتِي فَلَمَّا ذَهَبَ قِيلَ لَهَا إِنَّهُ رَسُولُ اللَّهِ ﷺ فَأَخَذَهَا مِثْلُ الْمَوْتِ فَأَتَتْ بَابَهُ فَلَمْ تَجِدْ عَلَى بَابِهِ بَوَّابِينَ فَقَالَتْ يَا رَسُولَ اللَّهِ لَمْ أَعْرِفْكَ فَقَالَ إِنَّمَا الصَّبْرُ عِنْدَ أَوَّلِ صَدْمَةٍ أَوْ قَالَ عِنْدَ أَوَّلِ الصَّدْمَةِ  

" The Apostle of Allah ﷺ happened to pass by a woman (who was sitting) by the side of a grave."  

حَدَّثَنَا شُعْبَةُ بِهَذَا الإِسْنَادِ نَحْوَ حَدِيثِ عُثْمَانَ بْنِ عُمَرَ بِقِصَّتِهِ وَفِي حَدِيثِ عَبْدِ الصَّمَدِ مَرَّ النَّبِيُّ ﷺ بِامْرَأَةٍ عِنْدَ قَبْرٍ