260. hadíth
وَقَالَ رَسُولُ اَللَّهِ صَلَّى اَللَّهُ عَلَيْهِ وَ آلِهِ: « «مَنْ كٰانَ يُؤْمِنُ بِاللّٰهِ وَ اَلْيَوْمِ اَلْآخِرِ» فَلاَ يَتْرُكْ عَانَتَهُ فَوْقَ أَرْبَعِينَ يَوْماً وَ لاَ يَحِلُّ لاِمْرَأَةٍ تُؤْمِنُ بِاللَّهِ وَ اَلْيَوْمِ اَلْآخِرِ أَنْ تَدَعَ ذَلِكَ مِنْهَا فَوْقَ عِشْرِينَ يَوْماً.
The Messenger of Allah (saws) said: "Whoever believes in Allah (swt) and the Last Day (Qiyamah) should not leave the hair of their pubic region untrimmed for more than forty days, and it is not permissible for a woman who believes in Allah (swt) and the Last Day (Qiyamah) to leave it untrimmed for more than twenty days."