He called on us to remember Allah by His most beautiful names

as we have seen earlier, the prophet (saas) would call on allah by his most beautiful names when communicating or explaining anything and when praying. the prophet (saas) was told to invite people to do the same:

say: "call on allah or call on the all-merciful, whichever you call upon, the most beautiful names are his." do not be too loud in your prayer [salat] or too quiet in it, but try to find a way between the two. and say: "praise be to allah who has had no son and who has no partner in his kingdom and who needs no one to protect him from abasement." and proclaim his greatness repeatedly! (surat al-isra': 110-111)