Sayyiduna Abdullah bin Mas'ud (may Allah be pleased with him) said: Ever since Sayyiduna Umar (may Allah be pleased with him) accepted Islam, we have been honoured.
As for the statement of Sayyiduna Umar (may Allah be pleased with him): When Islam came, our affair and that of Banu Sahm was one, that is because Banu Sahm were the supporters of Banu Adi in the Jahiliyyah. Banu Jumah gathered against Banu Adi because of a feud between them, so Banu Sahm, the brothers of Jumah, stood up in their defence and said: Banu Adi are fewer than you in number; if you wish, bring out against them from among you a number equal to theirs, and we will leave you and them to each other; and if you wish, we will make up their number from among ourselves until they are like you. So they held back from one another. This was stated by al-Zubayr bin Bakkar (may Allah have mercy on him). The lineage of Sayyiduna Abu Ubaydah (may Allah be pleased with him) is: Amir bin Abdullah bin al-Jarrah bin Hilal bin Uhayb bin Dabbah bin al-Harith bin Fihr bin Malik. This is the statement of Muhammad bin Ishaq (may Allah have mercy on him) and others.
Hadith Referenceالسنن الكبرى للبيهقي / كتاب قسم الفيء والغنيمة / 13105