Perhaps you are referring to the practice in the Shia community of combining the Zuhr and Asr prayers and the Maghrib with Isha prayers.

This is considered permitted on account of abundant evidence in the Islamic sources that the Prophet (s) had combined these prayers without any special reason.

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Sayyed Mohammad Al-Musawi, Sayyed Mohammad al-Musawi is originally from Iraq and heads up the World Ahlul Bayt Islamic League in London. Other than being involved in various humanitarian projects, he frequently responds to... Answered 2 years ago

Your prayer is valid and you do not need to pray again. Cleaning the area of the discharge is good but it is not a condition for validity of you Prayer. This is when the discharge is not blood. If it was blood which came out and made pats of your outer body Najis, then you need to wash and clean it.