Ka'b reported that Messenger of Allah ﷺ said that the similitude of a believer is that of a standing crop in a field which is shaken by wind and then it comes to its original position but it stands at its roots. The similitude of a non-believer is that of a cypress tree which stands on its roots and nothing shakes it but it is uprooted (with) one (violent stroke). (Using translation from Muslim 2810a)
قَالَ رَسُولُ اللهِ ﷺ مَثَلُ الْمُؤْمِنِ كَالْخَامَةِ مِنَ الزَّرْعِ تُفَيِّئُهَا الرِّيَاحُ تَصْرَعُهَا مَرَّةً وَتَعْدِلُهَا أُخْرَى حَتَّى يَأْتِيَهُ أَجَلُهُ وَمَثَلُ الْكَافِرِ مَثَلُ الْأَرْزَةِ الْمُجْذِيَةِ عَلَى أَصْلِهَا لَا يُقِلُّهَا شَيْءٌ حَتَّى يَكُونَ انْجِعَافُهَا مَرَّةً