Al-Muwatta de Malik, 113

Soulaiman Ibn Yassar a rapporté que Omar Ibn Al-Khattab fit la prière en commun avec les hommes puis partit à sa propriété à Aljourof. Comme il vit du sperme sur son vêtement, il dit: «depuis que nous mangeons de la viande graisseuse, les veines se sont amollies». Ainsi, il fit une lotion, enleva les traces du sperme de son vêtement puis il fit la prière»

Yahya related to me from Malik from Yahya ibn Said from Sulayman ibn Yasar that Umar ibn al-Khattab led the people in the subh prayer and then went out to his land in Juruf and found semen on his clothes. He said, "Since we have been eating rich meat our veins have become fulsome." He did ghusl, washed the semen from his clothing, and did his prayer again