Zaynab said, "I went to the house of Zaynab bint Jahsh, the wife
of the Prophet, may Allah bless him and grant him peace, when her
brother had died. She called for perfume and put some on and said, 'By
Allah! I have no need of perfume, but I heard the Messenger of Allah,
may Allah bless him and grant him peace, say, 'It is not halal for a
woman who trusts in Allah and the Last Day to abstain from adornment
in mourning for someone who has died for more than three nights,
except for four months and ten days for a husband.' "
Muwatta Malik Book 29, Hadith 113
“Islam will wear out as embroidery on a garment wears
out, until no one will know what fasting, prayer, (pilgrimage) rites
and charity are. The Book of Allah will be taken away at night, and
not one Verse of it will be left on earth. And there will be some
people left, old men and old women, who will say: “We saw our
fathers saying these words: ‘La ilaha illallah’ so we say them
too.” Silah said to him: “What good will (saying): La ilaha
illallah do them, when they do not know what fasting, prayer,
(pilgrimage) rites and charity are?” Hudhaifah turned away from
his. He repeated his question three times, and Hudhaifah turned away
from him each time. Then he turned to him on the third time and said:
“O Silah! It will save them from Hell,” three times.
Sunan Ibn Majah Book 36, Hadith 124
The Prophet (ﷺ) said at Mina, "Do you know what day is today?" They (the people) replied, "Allah and
His Apostle 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 Apostle 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 Apostle 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.)
Sahih al-Bukhari Book 78, Hadith 73
"We were with the Messenger of Allah in the year of Khaibar, and we did not get any spoils of war except for wealth, goods and clothes. Then a man from Banu Ad-Dubaib, who was called Rifa'ah bin Zaid, gave the Messenger of Allah a black slave who was called Mid'am. The Messenger of Allah set out for Wadi Al-Qura. When we were in Wadi Al-Qura, while Mid'am was unloading the luggage of the Messenger of Allah, an arrow came and killed him. The people said: 'Congratulations! You will go to Paradise,' but the Messenger of Allah said: 'No, by the One in Whose hand is my soul! The cloak that he took from the spoils of war on the Day of Khaibar is burning him with fire.' When the people heard that, a man brought one or two shoelaces to the Messenger of Allah and the Messenger of Allah said: 'One or two shoelaces of fire.'"
Sunan an-Nasa'i Book 35, Hadith 67