Riyad-us-Saliheen 124
Abu Hurairah (May Allah be pleased with him) reported: O Muslim women, never belittle any gift you give your neighbour even if it is a hoof of a sheep".
[Al-Bukhari and Muslim]
This Hadith enjoins that any gift presented sincerely by a neighbour should not be treated as humble, however ordinary it may be, because in spite of being of small worth it has a high value with Allah.