In the Quasar framework, you can pass data from one component to another by using props.

Here's how you can pass data from a parent component to a child component using props:

1) In the parent component, define a prop with a name and a type:

```php
<template>
  <child-component :propName="parentData"></child-component>
</template>

<script>
import ChildComponent from 'path/to/ChildComponent.vue'

export default {
  components: {
    ChildComponent
  },
  data() {
    return {
      parentData: 'data to pass'
    }
  }
}
</script>
```

2) In the child component, declare the prop with the same name:

```php
<template>
  <div>{{propName}}</div>
</template>

<script>
export default {
  props: {
    propName: String
  }
}
</script>
```

In this example, we passed a string as the prop type, but you can also use other data types like numbers or objects.

You can also pass data from a child component to a parent component using events. Here's how you can emit an event from a child component and listen to it in a parent component:

1) In the child component, define a method that emits an event:

```php
<template>
  <button @click="emitEvent">Emit Event</button>
</template>

<script>
export default {
  methods: {
    emitEvent() {
      this.$emit('eventName', 'data to pass')
    }
  }
}
</script>
```

2) In the parent component, listen to the event and define a method to handle it:

```php
<template>
  <child-component @eventName="handleEvent"></child-component>
</template>

<script>
import ChildComponent from 'path/to/ChildComponent.vue'

export default {
  components: {
    ChildComponent
  },
  methods: {
    handleEvent(data) {
      console.log(data) // 'data to pass'
    }
  }
}
</script>
```

In this example, we emitted an event with a name "eventName" and passed a string as data. The parent component listened to the "eventName" event and defined a method "handleEvent" to handle the data.
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