It is narrated from Sayyidah Umm Salamah (may Allah be pleased with her) that when the Prophet (peace and blessings be upon him) removed his body hair, he would remove the pubic hair with his own hand.
Kamil Abu al-Ala narrated it as connected (musnad), while someone more reliable than him narrated it as mursal.
Hadith Referenceالسنن الكبرى للبيهقي / كتاب الطهارة / 701