A man striking his hand on his thigh when he is amazed or for some other reason

'Ali reported that the Messenger of Allah ﷺ knocked at the door of 'Ali and Fatima, the daughter of the Prophet ﷺ and said, "Don't you pray?" 'Ali said, "I said, 'Messenger of Allah, our spirits are with Allah. When He wishes to wake us up, we will make up.' The Prophet ﷺ left without saying anything to me. Then I heard him strike him thigh after his back was turned. He said, 'More than anything else, man is argumentative.' (18:54)"

حَدَّثَنَا يَحْيَى بْنُ بُكَيْرٍ، قَالَ: حَدَّثَنَا اللَّيْثُ، عَنْ عُقَيْلٍ، عَنِ ابْنِ شِهَابٍ، عَنْ عَلِيِّ بْنِ حُسَيْنٍ، أَنَّ حُسَيْنَ بْنَ عَلِيٍّ حَدَّثَهُ، عَنْ عَلِيٍّ رَضِيَ اللَّهُ عَنْهُ، أَنَّ رَسُولَ اللهِ ﷺ طَرَقَهُ وَفَاطِمَةَ بِنْتَ النَّبِيِّ ﷺ، فَقَالَ: أَلاَ تُصَلُّونَ؟ فَقُلْتُ: يَا رَسُولَ اللهِ، إِنَّمَا أَنْفُسُنَا عِنْدَ اللهِ، فَإِذَا شَاءَ أَنْ يَبْعَثَنَا بَعَثَنَا، فَانْصَرَفَ النَّبِيُّ ﷺ، وَلَمْ يَرْجِعْ إِلَيَّ شَيْئًا، ثُمَّ سَمِعْتُ وَهُوَ مُدْبِرٌ يَضْرِبُ فَخِذَهُ يَقُولُ: {وَكَانَ الإِنْسَانُ أَكْثَرَ شَيْءٍ جَدَلاً}.