The properties of Bani An-Nadir which Allah had transferred to His Apostle as Fai Booty were not gained by the Muslims with their horses and camels. The properties therefore, belonged especially to Allah's Messenger (ﷺ) who used to give his family their yearly expenditure and spend what remained thereof on arms and horses to be used in Allah's Cause.
Sahih al-Bukhari Book 56, Hadith 118
← Previous Hadith When the helmet of the Prophet (ﷺ) was smashed on his head and blood covered his face and one of his front teeth got broken, `Ali brought the water in his shield and Fatima the Prophet's daughter) washed him. But when she saw that the bleeding increased more by the water, she took a mat, burnt it, and placed the ashes on the wound of the Prophet (ﷺ) and so the blood stopped oozing out.

Sahih al-Bukhari Book 56, Hadith 117 Next Hadith → I never saw the Prophet (ﷺ) saying, "Let my parents sacrifice their lives for you," to any man after Sa`d. I heard him saying (to him), "Throw (the arrows)! Let my parents sacrifice their lives for you."

Sahih al-Bukhari Book 56, Hadith 119