Hadithcore
Musnad Ahmad 3644
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It was narrated that Humaid bin ‘Abdur-Rahman said: Ibn Mas’ood (رضي الله عنه) said:

I was never kept away from any conversation (of the Messenger of Allah (ﷺ), with someone else) or from such and such, or from such and such. - Ibn ‘Awn (one of the narrators) said: He forgot one and I forgot one - I (Ibn Mas'ood) came to him (the Prophet (ﷺ)) when Malik bin Murarah ar-Rahawi was with him and I caught up with the end of their conversation, when he was saying O Messenger of Allah, I have been given a share of the camels (i.e., booty) and I would not like anyone to have been given more than me, not even two shoelaces or more, is that injustice? He said: "No, that is not injustice; rather injustice is rejecting the truth and looking down on people."

References1 variant
Arabic/English book
Book 26, Hadith 3644