The etiquette of praising a fellow Muslim1 du'a
If any of you praises his companion then let him say: I consider (such and such a person), and Allah...
أَحْسِبُ فُلاَناً وَاللَّهُ حَسِيبُهُ وَلاَ أُزَكِّي عَلَى اللَّهِ أَحَداً
"If any of you praises his companion then let him say: I consider (such and such a person), and Allah is his …"