Once Allah's Messenger (ﷺ) passed by a dead sheep and said to the people, "Wouldn't you benefit by its skin?" The people replied that it was dead. The Prophet (ﷺ) said, "But its eating only is illegal."
Sahih al-Bukhari Book 34, Hadith 168
← Previous Hadith Hakim bin Hizam said, "O Allah's Messenger (ﷺ)! I used to do good deeds in the Pre-Islamic period of Ignorance, e.g., keeping good relations with my Kith and kin, manumitting slaves and giving alms. Shall I receive a reward for all that?" Allah's Messenger (ﷺ) replied, "You embraced Islam with all the good deeds which you did in the past."

Sahih al-Bukhari Book 34, Hadith 167 Next Hadith → Allah's Messenger (ﷺ) said, "By Him in Whose Hands my soul is, son of Mary (Jesus) will shortly descend amongst you people (Muslims) as a just ruler and will break the Cross and kill the pig and abolish the Jizya (a tax taken from the non-Muslims, who are in the protection, of the Muslim government). Then there will be abundance of money and nobody will accept charitable gifts.

Sahih al-Bukhari Book 34, Hadith 169