Ada is performance within the designated time; qada is performance after it expires. A missed Zuhr offered during Asr time is qada, whereas the Asr prayer offered then is ada.
The expiration of time does not erase the outstanding obligatory prayer.
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Ada and qada are distinct
Making Up Missed Prayers: Obligation and Sequence
Ada is performance within the designated time; qada is performance after it expires. A missed Zuhr offered during Asr time is qada, whereas the Asr prayer offered then is ada.
The expiration of time does not erase the outstanding obligatory prayer.