Penalty of Hunting while on Pilgrimmage

Bukhari :: Book 3 :: Volume 29 :: Hadith 88

Narrated Anas:

The Prophet saw an old man walking, supported by his two sons, and asked about him. The people informed him that he had vowed to go on foot (to the Ka'ba). He said, "Allah is not in need of this old man's torturing himself," and ordered him to ride.