ـ (لَتَنهكُنَّ الأصابعَ بالطَّهور؛ أو لَتَنْهَكَنَّها النّارُ) .
Sayyiduna Abdullah bin Mas'ud (may Allah be pleased with him) narrates that the Messenger of Allah (peace and blessings of Allah be upon him) said: "You will wash the fingers thoroughly with pure water, otherwise the fire will burn them intensely."