Narrated Anas:

The Prophet ﷺ came upon a woman who was weeping for her child. He said to her: Fear Allah and have patience. She said: What have you to do with my calamity ? She was then told that he was the Prophet ﷺ. She, therefore, came to him. She did not find doorkeepers at his gate. She said: I did not recognize you, Messenger of Allah. He said: Endurance is shown only at a first blow.

حَدَّثَنَا مُحَمَّدُ بْنُ الْمُثَنَّى، حَدَّثَنَا عُثْمَانُ بْنُ عُمَرَ، حَدَّثَنَا شُعْبَةُ، عَنْ ثَابِتٍ، عَنْ أَنَسٍ، قَالَ أَتَى نَبِيُّ اللَّهِ ﷺ عَلَى امْرَأَةٍ تَبْكِي عَلَى صَبِيٍّ لَهَا فَقَالَ لَهَا " اتَّقِي اللَّهَ وَاصْبِرِي " . فَقَالَتْ وَمَا تُبَالِي أَنْتَ بِمُصِيبَتِي فَقِيلَ لَهَا هَذَا النَّبِيُّ ﷺ . فَأَتَتْهُ فَلَمْ تَجِدْ عَلَى بَابِهِ بَوَّابِينَ فَقَالَتْ يَا رَسُولَ اللَّهِ لَمْ أَعْرِفْكَ فَقَالَ " إِنَّمَا الصَّبْرُ عِنْدَ الصَّدْمَةِ الأُولَى " . أَوْ " عِنْدَ أَوَّلِ صَدْمَةٍ " .