Virtues relating to angels are as follows:
Zikr-i-Ilahi: Remembrance of God or the contemplation of His attributes. We have it on authority that Angels rush in where Zikr-i-Ilahi is practiced. The Holy Prophet — peace be on him — has said that angels surround such a place.
External cleanliness: We are enjoined to use perfume where angels’ visit is likely. For instance, to bathe and apply perfume on the occasion of the congregational Prayer on Friday is to follow the practice of the Holy Prophet — peace be on him.