Condemnation of strutting

Allah forbids His servants to strut and walk in a boastful manner:

وَلاَ تَمْشِ فِى الاٌّرْضِ مَرَحًا

After having described details of the injunctions appearing above, it was said in the last verse: كُلُّ ذَٰلِكَ كَانَ سَيِّئُهُ عِندَ رَ‌بِّكَ مَكْرُ‌وهًا (That which is evil, of all these, is detestable in the sight of your Lord - 38).

As for what has been forbidden in the said injunctions, their repugnance is obvious. But, within these there are some commandments where rights of parents and relatives have been enjoined or fulfillment of promises has been made mandatory. Here too, the purpose is to avoid doing the opposite of it, like hurting parents, breaking off from relatives and going back on solemn promises. Since all these things are haram or reprehensible, therefore, it has been called 'makruh' in a general sense of 'detestable' which includes the haram and makruh both. (Bayan al-Qur an)