Hadith 4422

Anas said they were told not to let more than forty days elapse between the times they clipped the moustache, pared the nails, plucked out hairs under the armipits and shaved the pubes. Muslim transmitted it.

وَعَن أَنس قَالَ: وُقِّتَ لَنَا فِي قَصِّ الشَّارِبِ وَتَقْلِيمِ الْأَظْفَارِ وَنَتْفِ الْإِبِطِ وَحَلْقِ الْعَانَةِ أَنْ لَا تُتْرَكَ أَكثر من أَرْبَعِينَ لَيْلَة. رَوَاهُ مُسلم

Reference: 5644220
In-book reference: Book 22, Hadith 4422