Where does “صلا” come from?

صلا (Ottoman Turkish) comes from Arabic صَلَاة, from Classical Syriac ܨܠܘܬܐ, from Aramaic צלותא.

Ancestry of “صلا”, step by step

Step	Language	Word	Meaning
1	Arabic	صَلَاة	prayer; salat, prayer
2	Classical Syriac	ܨܠܘܬܐ	prayer; temple, sanctuary; reconciliation,...
3	Aramaic	צלותא	—