Dua Etiquette of praising a fellow Muslim

މުސްލިމް އަޚަކަށް ތަޢުރީފު ކުރުމުގެ އަދަބު

أَحْسِبُ فُلَانًا وَاللَّهُ حَسِيبُهُ وَلَا أُزَكِّي عَلَى اللَّهِ أَحَدًا أَحْسِبُهُ كَذَا وَكَذَا

What it means

I think that he is so and so, and Allah knows exactly the truth, and I do not confirm anybody's good conduct before Allah, but I think him so and so. It is to be said when you must ensure you have knowledge that the certain characteristic is present in that person.