Perform ablution/wudhu before going to sleep even if you are in a state of ritual impurity .

This hadith is about the importance of performing ablution, or wudu, before going to sleep. It was narrated by 'Aishah that the Prophet Muhammad would perform wudu even if he was in a state of ritual impurity. This shows us how important it is to be clean and pure when we go to sleep, as it is an act of worship and obedience to Allah. Even though we may not be able to pray at night due to being in a state of ritual impurity, we can still show our devotion by performing wudu before sleeping. This hadith also teaches us that cleanliness is important for our spiritual well-being and should not be neglected even when we are tired or busy with other things.