And We made an appointment with Moses for thirty nights and perfected them by [the addition of] ten; so the term of his Lord was completed as forty nights. And Moses said to his brother Aaron, "Take my place among my people, do right [by them], and do not follow the way of the corrupters."
Sahih International
۞ وَوَٰعَدْنَا
wawāʿadnā
And We appointed
Word breakdown
وَ
Harf · Conjunctionand
وَٰعَدْ
Fi'l · VerbAnd We appointed
to promise, make a promise, appoint a time
151× in the Quran · Common
نَا
Ism · Personal pronounus/our
Grammar rules
۞ وَوَٰعَدْنَا (And We appointed) is a past tense verb — the action already happened and is complete.
We translate it in past tense — "did", "created", "said", etc.
Lesson 8 · Verbs — Past & Present۞ وَوَٰعَدْنَا (And We appointed) uses form III (فَاعَلَ) — it describes doing something with or to each other.
The action involves two parties.
Lesson 12 · Verb Families II–IV۞ وَوَٰعَدْنَا (And We appointed) starts with وَ, the most common Arabic word — it means "and".
We add "and" to connect this to what came before.
Lesson 4 · Particles