Pray when one remembers a forgotten prayer .

The Prophet Muhammad taught us that if we forget to pray, we should make up for it when we remember. This is because prayer is an important part of our faith and relationship with Allah. We must always strive to remember our prayers and not let them slip away from us. If we do forget, however, it is important that we make up for it as soon as possible so that our relationship with Allah remains strong and healthy.

The Prophet also taught us the importance of remembrance in general - not just in regards to prayer but also in other aspects of life such as being mindful of Allah's blessings and remembering His commands. By doing this, we can stay connected with Him even when times are tough or when things become difficult for us.