Habib bin Abi Thabit (may Allah have mercy on him) says: I was with Ibn Umar (may Allah be pleased with them both) when a man from the desert came and said: I gave my son a she-camel for his lifetime, and she has given birth to camels. Ibn Umar (may Allah be pleased with them both) said: It is his in his life and after his death. He said: I gave it to him as charity. Ibn Umar (may Allah be pleased with them both) said: Then that puts it even further from you.
Hadith Referenceالسنن الكبرى للبيهقي / كتاب الهبات / 11982