What is the ruling on letting the nails grow long?

Question 9: What is the ruling on letting the nails grow long?

Answer: It is not permissible to let one’s nails grow long because it is against Sunan al-Fitrah (natural hygiene) which the Prophet (peace upon him) has exhorted us to adhere to. Clipping the nails is one of Sunan al-Fitrah, which also include plucking the armpit hair, shaving the pubic hair, and cutting the moustache short; and this should be done at most every forty days, according to the Hadeeth related by Muslim in his Saheeh (Authentic Hadeeth Book) on the authority of Anas (may Allaah be pleased with him) who said... read more here.

Washing some parts of the body with soap after performing Wudoo’

Question 101What is the ruling on washing some parts of the body with soap, having a hair cut, or trimming the nails after performing Wudoo’ (ablution)?

Answer: All praise be to Allaah Alone, and peace and blessings be upon His Messenger, and his family and Companions! If a person performs Wudoo’ and then washes some parts of their body, have their hair cut, or trim their nails, this does not invalidate Wudoo’... read more here.