حَدَّثَنَا أَحْمَدُ بْنُ عَبْدِ اللَّهِ بْنِ يُونُسَ، حَدَّثَنَا زُهَيْرٌ، حَدَّثَنَا أَبُو الزُّبَيْرِ، عَنْ جَابِرٍ، قَالَ قَالَتِ امْرَأَةُ بَشِيرٍ انْحَلِ ابْنِي غُلاَمَكَ وَأَشْهِدْ لِي رَسُولَ اللَّهِ صلى الله عليه وسلم ‏.‏ فَأَتَى رَسُولَ اللَّهِ صلى الله عليه وسلم فَقَالَ إِنَّ ابْنَةَ فُلاَنٍ سَأَلَتْنِي أَنْ أَنْحَلَ ابْنَهَا غُلاَمِي وَقَالَتْ أَشْهِدْ لِي رَسُولَ اللَّهِ صلى الله عليه وسلم فَقَالَ ‏"‏ أَلَهُ إِخْوَةٌ ‏"‏ ‏.‏ قَالَ نَعَمْ ‏.‏ قَالَ ‏"‏ أَفَكُلَّهُمْ أَعْطَيْتَ مِثْلَ مَا أَعْطَيْتَهُ ‏"‏ ‏.‏ قَالَ لاَ ‏.‏ قَالَ ‏"‏ فَلَيْسَ يَصْلُحُ هَذَا ‏.‏ وَإِنِّي لاَ أَشْهَدُ إِلاَّ عَلَى حَقٍّ ‏"‏ ‏.‏

Jabir (Allah be pleased with him) reported that the wife of Bashir said (to her husband): Give to my son your slave as a gift, and make for me Allah's Messenger (PBUH) a witness He came to Allah's Messenger (PBUH) and said: The daughter of so and so (his wife Amra bint Rawaha) asked me to give my slave as a gift to her son, and call for me Allah's Messenger (PBUH) as a witness. Thereupon he (the Holy Prophet) said: Has he (Nu'man) brothers? He (Bashir) said: Yes. He (further) said: Have you given to all others as you have given to him? He said: No. He said: Then it is not fair; and verily I cannot bear witness but only to what is just. Translation Not Available

Book Ref: Sahih Muslim Book 24 Hadith 3971
Web Ref:  Sahih Muslim Book 12 Hadith 1624