Looks like Diary isn’t a very useful place for this stuff. Transferred to my Wiki Talk page: osm.wiki/User:Eteb3/ideas#Mosque_vs_musalla_(2024-08-05)

Indonesia 1. Musholla Sunan Bonang osm.org/way/328500343/history Streetview (note change of tag from mosque to musalla)

1. Musholla osm.org/way/332359553 Streetview

Some Malaysian uses of the place_of_worship=musalla tag, where Google has a StreetView available:

1. Surau Nurul Iman osm.org/way/447954032 Streetview (Note minaret.)

2. Surau Amanputra osm.org/way/625105296 Streetview

3. Surau Hamidiya osm.org/way/1046569148 Streetview

4. Surau Al-Ikhlas osm.org/way/918723085 Streetview