Musa bin Harun said: Salih bin Yahya is not known, nor is his father, except through his grandfather, and this is weak. And al-Waqidi claimed that Khalid bin al-Walid accepted Islam after the conquest of Khaybar.
Hadith Referenceالسنن الكبرى للبيهقي / كتاب الضحايا / 19449