During the last Hajj (Hajj-al-Wada`) of Allah's Messenger (ﷺ) he performed `Umra and Hajj. He drove a
Hadi along with him from Dhul-Hulaifa. Allah's Messenger (ﷺ) started by assuming Ihram for `Umra and
Hajj. And the people, too, performed the `Umra and Hajj along with the Prophet. Some of them
brought the Hadi and drove it along with them, while the others did not. So, when the Prophet (ﷺ) arrived
at Mecca. he said to the people, "Whoever among you has driven the Hadi, should not finish his Ihram
till he completes his Hajj. And whoever among you has not (driven) the Hadi with him, should
perform Tawaf of the Ka`ba and the Tawaf between Safa and Marwa, then cut short his hair and finish
his Ihram, and should later assume Ihram for Hajj; but he must offer a Hadi (sacrifice); and if anyone
cannot afford a Hadi, he should fast for three days during the Hajj and seven days when he returns
home. The Prophet (ﷺ) performed Tawaf of the Ka`ba on his arrival (at Mecca); he touched the (Black
Stone) corner first of all and then did Ramal (fast walking with moving of the shoulders) during the
first three rounds round the Ka`ba, and during the last four rounds he walked. After finishing Tawaf of
the Ka`ba, he offered a two rak`at prayer at Maqam Ibrahim, and after finishing the prayer he went to
Safa and Marwa and performed seven rounds of Tawaf between them and did not do any deed
forbidden because of Ihram, till he finished all the ceremonies of his Hajj and sacrificed his Hadi on
the day of Nahr (10th day of Dhul-Hijja). He then hastened onwards (to Mecca) and performed Tawaf
of the Ka`ba and then everything that was forbidden because of Ihram became permissible. Those who
took and drove the Hadi with them did the same as Allah's Messenger (ﷺ) did.
Sahih al-Bukhari Book 25, Hadith 170
That `Umar bin Al-Khattab wore a new garment and said: “All praise is due to Allah who clothed me with what I may cover my `Awrah, and what I may beautify myself with in my life (Al-ḥamdulillāh, alladhī kasānī mā uwārī bihī `awratī, wa atajammalu bihī fī ḥayātī).” Then he said: “I heard the Messenger of Allah (ﷺ) saying: ‘Whoever wears a new garment and then says: “Allah praise is due to Allah who clothed me with what I may cover my `Awrah and what I may beautify myself with in my life (Al-ḥamdulillāh, alladhī kasānī mā uwārī bihī `awratī, wa atajammalu bihī fī ḥayātī)” and then he takes the garment that has worn out and gives it in charity, he shall be under Allah’s guard, Allah’s protection, and Allah’s covering, alive and dead.’”
Jami` at-Tirmidhi Book 48, Hadith 191
That the Messenger of Allah (ﷺ) said: "The best companions are four, the best Saraya (military unit) is four hundred, the best army is four thousand, and twelve thousand will not be beaten due to being too few."
This Hadith is Hasan Gharib, it was not narrated with a chain by anyone important besides Jarir bin Hazim, and this Hadith was only reported from Az-Zuhri, from the Prophet (ﷺ) in Mursal form. Hibban bin 'Ali Al-'Anazi reported it from 'Uqail, from Az-Zuhri, from 'Ubaidullah, from 'Ibn Abbas, from the Prophet (ﷺ), and Al-Laith bin Sa'd reported it from Sa'd, from 'Uqail, from Az-Zuhri, from the Prophet (ﷺ) in the Mursal form.
Jami` at-Tirmidhi Book 21, Hadith 10
O Abu Jahl b. Hisham, O Umayya b. Khalaf, O Utba b. Rab'ila, O Shaiba b. Rabi'a, have you not found what your Lord had promised with you to be correct? As for me, I have found the promises of my Lord to be (perfectly) correct. Umar listened to the words of Allah's Apostle (ﷺ) and said: Allah's Messenger, how do they listen and respond to you? They are dead and their bodies have decayed. Thereupon he (the Holy Prophet) said: By Him in Whose Hand is my life, what I am saying to them, even you cannot hear more distinctly than they, but they lack the power to reply. Then'he commanded that they should be buried in the well of Badr.
Sahih Muslim Book 53, Hadith 92