The past tense of rest is rested. The third-person singular simple
Has perfect or had tense?
Explanation: Has had (or generally have/has + Past Participle) is a form of Present Perfect (Simple) tense. You use Present Perfect tense to talk about past events which are already over but have influence on the present.
Has had use?
Let's see how “has had” is used in an example sentence below: David has had a nice car. Depending on the specific context, this sentence can refer to a past experience. In other words, David has had a nice car (in the past).