The most hated of men before Allah on the Resurrection Day and the most wretched will be a man who was called Malik Al-Amlak (king of kings) for there is no king except Allah. Bukhaari

The prophet (sallalahu alayhi wasallam) said: If any man from among my Ummah drinks wine, Allah will not accept his prayers for forty days.

Treat the Hujajj nicely.Whoever performs Hajj without obscenity shall return (from Hajj) like a newborn baby. Bukhaari