Once I gave a horse (for riding) in Allah's Cause. Later I saw it being sold. I asked Allah's Messenger (ﷺ) (whether I could buy it). He said, "Don't buy it, for you should not get back what you have given in charity."
Sahih al-Bukhari Book 51, Hadith 68
← Previous Hadith Allah's Messenger (ﷺ) said, "The Prophet (ﷺ) Abraham migrated with Sarah. The people (of the town where they migrated) gave her Ajar (i.e. Hajar). Sarah returned and said to Abraham, "Do you know that Allah has humiliated that pagan and he has given a slave-girl for my service?"

Sahih al-Bukhari Book 51, Hadith 67 Next Hadith → About the story of `Aisha and their narrations were similar attesting each other, when the liars said what they invented about `Aisha, and the Divine Inspiration was delayed, Allah's Messenger (ﷺ) sent for `Ali and Usama to consult them in divorcing his wife (i.e. `Aisha). Usama said, "Keep your wife, as we know nothing about her except good." Barirah said, "I cannot accuse her of any defect except that she is still a young girl who sleeps, neglecting her family's dough which the domestic goats come to eat (i.e. she was too simpleminded to deceive her husband)." Allah's Messenger (ﷺ) said, "Who can help me to take revenge over the man who has harmed me by defaming the reputation of my family? By Allah, I have not known about my family-anything except good, and they mentioned (i.e. accused) a man about whom I did not know anything except good."

Sahih al-Bukhari Book 52, Hadith 1