Source text
وَالِاسْتِنْجَاءُ سُنَّةٌ مِنْ نَجَسٍ يَخْرُجُ مِنَ السَّبِيلَيْنِ مَا لَمْ يَتَجَاوَزِ الْمَخْرَجَ
• Istinja means cleansing impurity from the private outlets.
• When the impurity remains within the normal outlet area and does not spread beyond it, Istinja is an emphasized Sunnah according to the commentary.
• If the impurity spreads beyond the outlet, the next ruling applies according to its amount.