What is the basis for deciding rulings concerning precedence when there is no explicit text?

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The preferred approach in matters without specific text concerning precedence is to adhere to what aligns with the precedent set by the Prophet's action in the Salat al-Khawf (fear prayer), returning the matter to the closest established ruling. If such precedence is performed without a valid excuse, the prayer is invalidated because intentionally abandoning adherence to the Imam is a breach of obligation.