Is the siwak and toothpaste among the things that invalidate wudu'?

Question:
May Allah reward you, Honorable Shaykh. This questioner, Umm Faisal from Makkah al-Mukarramah, asks and says: Does the siwak and toothpaste invalidate wudu'?

Answer:
The siwak is a recommended practice (sunnah) of wudu'. It is required for a person to use it before wudu', before rinsing the mouth, so it is a recommended practice of wudu' because of the saying of the Messenger (peace and blessings be upon him) and in a narration, with every wudu'. As for the toothpaste, it is permissible (mubah); there is no harm in it, and it does not invalidate wudu'. So if the one performing wudu' uses toothpaste on his teeth to clean them, there is no blame on him, and this does not affect the wudu'.