Anas (May Allah be pleased with him) reported:
Whenever the Messenger of Allah (ﷺ) was asked a thing by one who is about to accept Islam but he would give it. A man came to the Prophet (ﷺ) and he gave him a herd of sheep scattered between two mountains. When he returned to his people, he said to them: "O my people! Embrace Islam because Muhammad gives like one who has no fear of poverty." Some people would embrace Islam only for worldly gains, but soon Islam becomes dearer to them than the world with all what it contains.[Muslim].
Arabic/English book reference: Book 1, Hadith 553