Prophet PBUH tells Muslims not to wear their pants below the ankle. In the Wests Muslims ignore this teaching. Will this lead them to hell fire?
Al-Bukhaari reported that the Prophet PBUH said: “Whatever of the izaar (lower garment) is below the ankles is in the Fire.” (al-Bukhaari, no. 5787)
Imam Ahmad reported that Abd al-Rahmaan ibn Yaqoob said: “I asked Abu Saeed: Did you hear anything from the Messenger of Allah (peace and blessings of Allah be upon him) concerning the izaar (lower garment)? he said, Yes, listen! The izaar of the believer should come to mid-calf, although there is nothing wrong if it comes between there and the ankles, but whatever is lower than the ankles is in the Fire, and he said it three times.”
Some of them think that his prayer is not valid, because he has covered his ‘awrah with a haram garment. They say that one of the conditions of covering the ‘awrah is that the garment worn should be permissible. So, a man is in danger if he prays in a garment that comes down below his ankles; he should fear Allah and raise his garment so that it will be above his ankles.
Fataawa Ibn ‘Uthaymeen, part 12, p. 306