Sahih Bukhari
Prophets
Volume: 004 / Book Number: 055 / Hadith Number: 563
Narrated 'Abdullah bin 'Umar:
When the Prophet passed by (a place called) Al Hijr, he said, "Do not enter the house of those who were unjust to themselves, unless (you enter) weeping, lest you should suffer the same punishment as was inflicted upon them." After that he covered his face with his sheet cloth while he was on the camel-saddle.