Sahih al-Bukhari 6043
Good Manners and Form (Al-Adab)
"...Let not a group scoff at another group.."
Narrated Ibn `Umar: The Prophet (ﷺ) said at Mina, "Do you know what day is today?" They (the people) replied, "Allah and His Messenger know better," He said "Today is 10th of Dhul-Hijja, the sacred (forbidden) day. Do you know what town is this town?" They (the people) replied, "Allah and His Messenger know better." He said, "This is the (forbidden) Sacred town (Mecca a sanctuary)." And do you know which month is this month?" They (the People) replied, "Allah and His Messenger know better." He said, ''This is the Sacred (forbidden) month ." He added, "Allah has made your blood, your properties and your honor Sacred to one another (i.e. Muslims) like the sanctity of this day of yours in this month of yours, in this town of yours." (See Hadith No. 797, Vol. 2.)