It is narrated from Sayyiduna Jabir (may Allah be pleased with him) that the wife of Bashir said: Give my son a gift and make the Messenger of Allah (peace and blessings be upon him) a witness to it. He came to the Messenger of Allah (peace and blessings be upon him) and said: The daughter of so-and-so asks me to give her son a gift, and she has said: Make the Messenger of Allah (peace and blessings be upon him) a witness. He (peace and blessings be upon him) asked: "Does he have brothers?" He said: Yes. He (peace and blessings be upon him) said: "Have you given all of them the same as you have given him?" He said: No. So he (peace and blessings be upon him) said: "This is not right, and I do not bear witness to injustice."
Hadith Referenceالسنن الكبرى للبيهقي / كتاب الهبات / 11997