It is narrated from Sayyiduna Samurah (may Allah be pleased with him) that the Prophet (peace and blessings be upon him) said: "When a gift is to a mahram relative, he should not take it back."
We have recorded it only through this chain, and it is not strong.
Hadith Referenceالسنن الكبرى للبيهقي / كتاب الهبات / 12026