عن منصور عن ابراهيم قال بال ثم أخذ ماءً فأدخل يده في ثيابه فمسح ذكره
المصنف لإبن ابي شيبة كتاب الطهارة
Mansur related from Ibrahim that he urinated, then took some water, slipped his hand inside his garment, and wiped his penis.
Ibn Abi Shayba, Al-musannaf, The book of purity