"On the day of the Conquest of Makkah, I heard the Prophet (ﷺ) saying: 'This is not to be battled over after today, until the Day of Judgement.'"

There are narrations on this topic from Ibn 'Abbas, Sulaiman bin Surad, and Muti'

This Hadith is Hasan Sahih, and it is a narration of Zakariyya bin Abi Za'idah from Ash-Sha'bi, we do not know of it except from his narration.
Jami` at-Tirmidhi Book 21, Hadith 74
← Previous Hadith "I entered upon 'Umar bin Al-Khattab. (Then) Uthman bin 'Affan, Az-Zubair, 'Abdur-Rahman bin Awf, and Sa'd bin Abi Waqqas entered. Then 'Ali and Al-'Abbas came disputing. 'Umar said to them: ' I ask you, by Allah the One by Whose Will the heavens and the earth are maintained, do you know that the Messenger of Allah (ﷺ) said: "We are not inherited from, what we leave is charity?" They said: 'Yes.' 'Umar said: 'When the Messenger of Allah (ﷺ) died, Abu Bakr said: "I am the caretaker of the Messenger of Allah (ﷺ)" So you and he went to Abu Bakr and you sought your inheritance from the son of your brother, and he sought the inheritance of his wife from her father. So Abu Bakr said that the Messenger of Allah (ﷺ) said: "We are not inherited from, what we leave is charity." And Allah knows that he is truthful, innocent, instructing and following the truth.'"

There is a lengthy story along with the Hadith. And this Hadith is Hasan Sahih Gharib as a narration of Malik bin Anas.

Jami` at-Tirmidhi Book 21, Hadith 73 Next Hadith → "I fought along with the Prophet (ﷺ), and if Fajr had begun he would wait until the sun rose, and when it rose he would fight. And if it was the middle of the daytime, he would wait until the sun passed the zenit, and when it passed the zenith he would fight until 'Asr. Then he would wait until he prayed 'Asr, then he would fight." He said: "And it is used to be said during that (time) the the wind of victory was raging, and the believers would supplicate for their armies in their Salat."

This Hadith has been reported from An-Nu'man bin Muqarrin through a chain that is more connected that this. Qatadah did not see An-Nu'man bin Muqarrin. An-Nu'man died during the Khilafah of 'Umar.

Jami` at-Tirmidhi Book 21, Hadith 75