The inner clothes have qualities, for the inner garment has its qualities. Imru’ al-Qays says to Unayzah

And if you have become displeased with my character*** then wash my clothes. From your clothes flowing .

He wanted the clothes he wore of love in his heart. God says, “And the clothing of piety. That is better.” In my view, it is directed to evidence of circumstances, such as the Almighty’s saying, “For the best provision is piety,” all the same if you understand what He means here by piety and considering the bodies as the hearts and souls. So know and consider mosques as places of prayer and divine conditions.